Update nlopes/slack to slack-go/slack

Fixes #236
2020-03-28 08:46:26 +01:00 · 2020-03-28 08:46:26 +01:00 · d63dd6006e
commit d63dd6006e
parent 2ee21247ad
104 changed files with 1737 additions and 381 deletions
--- a/go.mod
+++ b/go.mod
@ -6,15 +6,15 @@ require (
 	github.com/0xAX/notificator v0.0.0-20171022182052-88d57ee9043b
 	github.com/OpenPeeDeeP/xdg v0.2.0
 	github.com/erroneousboat/termui v0.0.0-20170923115141-80f245cdfa04
-	github.com/gorilla/websocket v1.4.1 // indirect
+	github.com/gorilla/websocket v1.4.2 // indirect
 	github.com/kr/pretty v0.1.0 // indirect
 	github.com/lithammer/fuzzysearch v1.1.0
 	github.com/maruel/panicparse v1.1.1 // indirect
 	github.com/mattn/go-runewidth v0.0.7
 	github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7 // indirect
-	github.com/nlopes/slack v0.6.1-0.20191106133607-d06c2a2b3249
 	github.com/nsf/termbox-go v0.0.0-20191229070316-58d4fcbce2a7
-	github.com/pkg/errors v0.8.1 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/slack-go/slack v0.6.3
 	github.com/stretchr/testify v1.4.0 // indirect
 	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
 	gopkg.in/yaml.v2 v2.2.4 // indirect
--- a/go.sum
+++ b/go.sum
@ -7,9 +7,11 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/erroneousboat/termui v0.0.0-20170923115141-80f245cdfa04 h1:DaFwoQC0Neeb2y2CVFxDPrS1BeyWAkKc4VVBDTZ0N98=
 github.com/erroneousboat/termui v0.0.0-20170923115141-80f245cdfa04/go.mod h1:UPpsbgDrqmUayOFOkCGD7+xrBIml/1dA0dsqTRnZqac=
+github.com/go-test/deep v1.0.4 h1:u2CU3YKy9I2pmu9pX0eq50wCgjfGIt539SqR7FbHiho=
+github.com/go-test/deep v1.0.4/go.mod h1:wGDj63lr65AM2AQyKZd/NYHGb0R+1RLqB8NKt3aSFNA=
 github.com/gorilla/websocket v1.2.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
-github.com/gorilla/websocket v1.4.1 h1:q7AeDBpnBk8AogcD4DSag/Ukw/KV+YhzLj2bP5HvKCM=
-github.com/gorilla/websocket v1.4.1/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
+github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
@ -23,15 +25,17 @@ github.com/mattn/go-runewidth v0.0.7 h1:Ei8KR0497xHyKJPAv59M1dkC+rOZCMBJ+t3fZ+tw
 github.com/mattn/go-runewidth v0.0.7/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
 github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7 h1:DpOJ2HYzCv8LZP15IdmG+YdwD2luVPHITV96TkirNBM=
 github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7/go.mod h1:ZXFpozHsX6DPmq2I0TCekCxypsnAUbP2oI0UX1GXzOo=
-github.com/nlopes/slack v0.6.1-0.20191106133607-d06c2a2b3249 h1:Pr5gZa2VcmktVwq0lyC39MsN5tz356vC/pQHKvq+QBo=
-github.com/nlopes/slack v0.6.1-0.20191106133607-d06c2a2b3249/go.mod h1:JzQ9m3PMAqcpeCam7UaHSuBuupz7CmpjehYMayT6YOk=
+github.com/nlopes/slack v0.6.0 h1:jt0jxVQGhssx1Ib7naAOZEZcGdtIhTzkP0nopK0AsRA=
+github.com/nlopes/slack v0.6.0/go.mod h1:JzQ9m3PMAqcpeCam7UaHSuBuupz7CmpjehYMayT6YOk=
 github.com/nsf/termbox-go v0.0.0-20191229070316-58d4fcbce2a7 h1:OkWEy7aQeQTbgdrcGi9bifx+Y6bMM7ae7y42hDFaBvA=
 github.com/nsf/termbox-go v0.0.0-20191229070316-58d4fcbce2a7/go.mod h1:IuKpRQcYE1Tfu+oAQqaLisqDeXgjyyltCfsaoYN18NQ=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
-github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/slack-go/slack v0.6.3 h1:qU037g8gQ71EuH6S9zYKnvYrEUj0fLFH4HFekFqBoRU=
+github.com/slack-go/slack v0.6.3/go.mod h1:HE4RwNe7YpOg/F0vqo5PwXH3Hki31TplTvKRW9dGGaw=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1 h1:2vfRuCMp5sSVIDSqO8oNnWJq7mPa6KVP3iPIwFBuy8A=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
--- a/handlers/event.go
+++ b/handlers/event.go
@ -11,8 +11,8 @@ import (

 	"github.com/0xAX/notificator"
 	"github.com/erroneousboat/termui"
-	"github.com/nlopes/slack"
 	termbox "github.com/nsf/termbox-go"
+	"github.com/slack-go/slack"

 	"github.com/erroneousboat/slack-term/components"
 	"github.com/erroneousboat/slack-term/config"
--- a/service/slack.go
+++ b/service/slack.go
@ -13,7 +13,7 @@ import (
 	"sync"
 	"time"

-	"github.com/nlopes/slack"
+	"github.com/slack-go/slack"

 	"github.com/erroneousboat/slack-term/components"
 	"github.com/erroneousboat/slack-term/config"
--- a/vendor/github.com/gorilla/websocket/README.md
+++ b/vendor/github.com/gorilla/websocket/README.md
@ -8,7 +8,7 @@ Gorilla WebSocket is a [Go](http://golang.org/) implementation of the

 ### Documentation

-* [API Reference](http://godoc.org/github.com/gorilla/websocket)
+* [API Reference](https://pkg.go.dev/github.com/gorilla/websocket?tab=doc)
 * [Chat example](https://github.com/gorilla/websocket/tree/master/examples/chat)
 * [Command example](https://github.com/gorilla/websocket/tree/master/examples/command)
 * [Client and server example](https://github.com/gorilla/websocket/tree/master/examples/echo)
--- a/vendor/github.com/gorilla/websocket/conn.go
+++ b/vendor/github.com/gorilla/websocket/conn.go
@ -244,8 +244,8 @@ type Conn struct {
 	subprotocol string

 	// Write fields
-	mu            chan bool // used as mutex to protect write to conn
-	writeBuf      []byte    // frame is constructed in this buffer.
+	mu            chan struct{} // used as mutex to protect write to conn
+	writeBuf      []byte        // frame is constructed in this buffer.
 	writePool     BufferPool
 	writeBufSize  int
 	writeDeadline time.Time
@ -302,8 +302,8 @@ func newConn(conn net.Conn, isServer bool, readBufferSize, writeBufferSize int,
 		writeBuf = make([]byte, writeBufferSize)
 	}

-	mu := make(chan bool, 1)
-	mu <- true
+	mu := make(chan struct{}, 1)
+	mu <- struct{}{}
 	c := &Conn{
 		isServer:               isServer,
 		br:                     br,
@ -377,7 +377,7 @@ func (c *Conn) read(n int) ([]byte, error) {

 func (c *Conn) write(frameType int, deadline time.Time, buf0, buf1 []byte) error {
 	<-c.mu
-	defer func() { c.mu <- true }()
+	defer func() { c.mu <- struct{}{} }()

 	c.writeErrMu.Lock()
 	err := c.writeErr
@ -429,7 +429,7 @@ func (c *Conn) WriteControl(messageType int, data []byte, deadline time.Time) er
 		maskBytes(key, 0, buf[6:])
 	}

-	d := time.Hour * 1000
+	d := 1000 * time.Hour
 	if !deadline.IsZero() {
 		d = deadline.Sub(time.Now())
 		if d < 0 {
@ -444,7 +444,7 @@ func (c *Conn) WriteControl(messageType int, data []byte, deadline time.Time) er
 	case <-timer.C:
 		return errWriteTimeout
 	}
-	defer func() { c.mu <- true }()
+	defer func() { c.mu <- struct{}{} }()

 	c.writeErrMu.Lock()
 	err := c.writeErr
--- a/vendor/github.com/gorilla/websocket/doc.go
+++ b/vendor/github.com/gorilla/websocket/doc.go
@ -187,9 +187,9 @@
 // than the largest message do not provide any benefit.
 //
 // Depending on the distribution of message sizes, setting the buffer size to
-// to a value less than the maximum expected message size can greatly reduce
-// memory use with a small impact on performance. Here's an example: If 99% of
-// the messages are smaller than 256 bytes and the maximum message size is 512
+// a value less than the maximum expected message size can greatly reduce memory
+// use with a small impact on performance. Here's an example: If 99% of the
+// messages are smaller than 256 bytes and the maximum message size is 512
 // bytes, then a buffer size of 256 bytes will result in 1.01 more system calls
 // than a buffer size of 512 bytes. The memory savings is 50%.
 //
--- a/vendor/github.com/gorilla/websocket/go.sum
+++ b/vendor/github.com/gorilla/websocket/go.sum
@ -1,2 +0,0 @@
-github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
-github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
--- a/vendor/github.com/gorilla/websocket/prepared.go
+++ b/vendor/github.com/gorilla/websocket/prepared.go
@ -73,8 +73,8 @@ func (pm *PreparedMessage) frame(key prepareKey) (int, []byte, error) {
 		// Prepare a frame using a 'fake' connection.
 		// TODO: Refactor code in conn.go to allow more direct construction of
 		// the frame.
-		mu := make(chan bool, 1)
-		mu <- true
+		mu := make(chan struct{}, 1)
+		mu <- struct{}{}
 		var nc prepareConn
 		c := &Conn{
 			conn:                   &nc,
--- a/vendor/github.com/nlopes/slack/go.mod
+++ b/vendor/github.com/nlopes/slack/go.mod
@ -1,9 +0,0 @@
-module github.com/nlopes/slack
-
-require (
-	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/gorilla/websocket v1.2.0
-	github.com/pkg/errors v0.8.0
-	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/stretchr/testify v1.2.2
-)
--- a/vendor/github.com/nlopes/slack/go.sum
+++ b/vendor/github.com/nlopes/slack/go.sum
@ -1,22 +0,0 @@
-github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/gorilla/websocket v1.2.0 h1:VJtLvh6VQym50czpZzx07z/kw9EgAxI3x1ZB8taTMQQ=
-github.com/gorilla/websocket v1.2.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
-github.com/nlopes/slack v0.1.0/go.mod h1:jVI4BBK3lSktibKahxBF74txcK2vyvkza1z/+rRnVAM=
-github.com/nlopes/slack v0.5.0 h1:NbIae8Kd0NpqaEI3iUrsuS0KbcEDhzhc939jLW5fNm0=
-github.com/nlopes/slack v0.5.0/go.mod h1:jVI4BBK3lSktibKahxBF74txcK2vyvkza1z/+rRnVAM=
-github.com/pkg/errors v0.8.0 h1:WdK/asTD0HN+q6hsWO3/vpuAkAr+tw6aNJNDFFf0+qw=
-github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/stretchr/testify v1.2.0/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
-github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
-github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
-github.com/victorcoder/slack-test v0.0.0-20190131110821-6f9a569c10af h1:JFxr+No3ZWgCtxnnTWCybnB/z0Iy3qLmdj3u2NV5o48=
-github.com/victorcoder/slack-test v0.0.0-20190131110821-6f9a569c10af/go.mod h1:dStM4ShMus8J3hiq66ExbbzGLkwyZ+RQJePwFhWCCvQ=
-github.com/victorcoder/slack-test v0.0.0-20190131113129-a43b3bb77f43 h1:wtFekkaAAQibpy3iE4Hhx2Gi9pZAbITOSfVP7GXk5eM=
-github.com/victorcoder/slack-test v0.0.0-20190131113129-a43b3bb77f43/go.mod h1:dStM4ShMus8J3hiq66ExbbzGLkwyZ+RQJePwFhWCCvQ=
-golang.org/x/net v0.0.0-20180108090419-434ec0c7fe37 h1:BkNcmLtAVeWe9h5k0jt24CQgaG5vb4x/doFbAiEC/Ho=
-golang.org/x/net v0.0.0-20180108090419-434ec0c7fe37/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
--- a/vendor/github.com/nlopes/slack/info.go
+++ b/vendor/github.com/nlopes/slack/info.go
@ -1,195 +0,0 @@
-package slack
-
-import (
-	"bytes"
-	"fmt"
-	"strconv"
-	"time"
-)
-
-// UserPrefs needs to be implemented
-type UserPrefs struct {
-	// "highlight_words":"",
-	// "user_colors":"",
-	// "color_names_in_list":true,
-	// "growls_enabled":true,
-	// "tz":"Europe\/London",
-	// "push_dm_alert":true,
-	// "push_mention_alert":true,
-	// "push_everything":true,
-	// "push_idle_wait":2,
-	// "push_sound":"b2.mp3",
-	// "push_loud_channels":"",
-	// "push_mention_channels":"",
-	// "push_loud_channels_set":"",
-	// "email_alerts":"instant",
-	// "email_alerts_sleep_until":0,
-	// "email_misc":false,
-	// "email_weekly":true,
-	// "welcome_message_hidden":false,
-	// "all_channels_loud":true,
-	// "loud_channels":"",
-	// "never_channels":"",
-	// "loud_channels_set":"",
-	// "show_member_presence":true,
-	// "search_sort":"timestamp",
-	// "expand_inline_imgs":true,
-	// "expand_internal_inline_imgs":true,
-	// "expand_snippets":false,
-	// "posts_formatting_guide":true,
-	// "seen_welcome_2":true,
-	// "seen_ssb_prompt":false,
-	// "search_only_my_channels":false,
-	// "emoji_mode":"default",
-	// "has_invited":true,
-	// "has_uploaded":false,
-	// "has_created_channel":true,
-	// "search_exclude_channels":"",
-	// "messages_theme":"default",
-	// "webapp_spellcheck":true,
-	// "no_joined_overlays":false,
-	// "no_created_overlays":true,
-	// "dropbox_enabled":false,
-	// "seen_user_menu_tip_card":true,
-	// "seen_team_menu_tip_card":true,
-	// "seen_channel_menu_tip_card":true,
-	// "seen_message_input_tip_card":true,
-	// "seen_channels_tip_card":true,
-	// "seen_domain_invite_reminder":false,
-	// "seen_member_invite_reminder":false,
-	// "seen_flexpane_tip_card":true,
-	// "seen_search_input_tip_card":true,
-	// "mute_sounds":false,
-	// "arrow_history":false,
-	// "tab_ui_return_selects":true,
-	// "obey_inline_img_limit":true,
-	// "new_msg_snd":"knock_brush.mp3",
-	// "collapsible":false,
-	// "collapsible_by_click":true,
-	// "require_at":false,
-	// "mac_ssb_bounce":"",
-	// "mac_ssb_bullet":true,
-	// "win_ssb_bullet":true,
-	// "expand_non_media_attachments":true,
-	// "show_typing":true,
-	// "pagekeys_handled":true,
-	// "last_snippet_type":"",
-	// "display_real_names_override":0,
-	// "time24":false,
-	// "enter_is_special_in_tbt":false,
-	// "graphic_emoticons":false,
-	// "convert_emoticons":true,
-	// "autoplay_chat_sounds":true,
-	// "ss_emojis":true,
-	// "sidebar_behavior":"",
-	// "mark_msgs_read_immediately":true,
-	// "start_scroll_at_oldest":true,
-	// "snippet_editor_wrap_long_lines":false,
-	// "ls_disabled":false,
-	// "sidebar_theme":"default",
-	// "sidebar_theme_custom_values":"",
-	// "f_key_search":false,
-	// "k_key_omnibox":true,
-	// "speak_growls":false,
-	// "mac_speak_voice":"com.apple.speech.synthesis.voice.Alex",
-	// "mac_speak_speed":250,
-	// "comma_key_prefs":false,
-	// "at_channel_suppressed_channels":"",
-	// "push_at_channel_suppressed_channels":"",
-	// "prompted_for_email_disabling":false,
-	// "full_text_extracts":false,
-	// "no_text_in_notifications":false,
-	// "muted_channels":"",
-	// "no_macssb1_banner":false,
-	// "privacy_policy_seen":true,
-	// "search_exclude_bots":false,
-	// "fuzzy_matching":false
-}
-
-// UserDetails contains user details coming in the initial response from StartRTM
-type UserDetails struct {
-	ID             string    `json:"id"`
-	Name           string    `json:"name"`
-	Created        JSONTime  `json:"created"`
-	ManualPresence string    `json:"manual_presence"`
-	Prefs          UserPrefs `json:"prefs"`
-}
-
-// JSONTime exists so that we can have a String method converting the date
-type JSONTime int64
-
-// String converts the unix timestamp into a string
-func (t JSONTime) String() string {
-	tm := t.Time()
-	return fmt.Sprintf("\"%s\"", tm.Format("Mon Jan _2"))
-}
-
-// Time returns a `time.Time` representation of this value.
-func (t JSONTime) Time() time.Time {
-	return time.Unix(int64(t), 0)
-}
-
-// UnmarshalJSON will unmarshal both string and int JSON values
-func (t *JSONTime) UnmarshalJSON(buf []byte) error {
-	s := bytes.Trim(buf, `"`)
-
-	v, err := strconv.Atoi(string(s))
-	if err != nil {
-		return err
-	}
-
-	*t = JSONTime(int64(v))
-	return nil
-}
-
-// Team contains details about a team
-type Team struct {
-	ID     string `json:"id"`
-	Name   string `json:"name"`
-	Domain string `json:"domain"`
-}
-
-// Icons XXX: needs further investigation
-type Icons struct {
-	Image36 string `json:"image_36,omitempty"`
-	Image48 string `json:"image_48,omitempty"`
-	Image72 string `json:"image_72,omitempty"`
-}
-
-// Info contains various details about the authenticated user and team.
-// It is returned by StartRTM or included in the "ConnectedEvent" RTM event.
-type Info struct {
-	URL  string       `json:"url,omitempty"`
-	User *UserDetails `json:"self,omitempty"`
-	Team *Team        `json:"team,omitempty"`
-}
-
-type infoResponseFull struct {
-	Info
-	SlackResponse
-}
-
-// GetBotByID is deprecated and returns nil
-func (info Info) GetBotByID(botID string) *Bot {
-	return nil
-}
-
-// GetUserByID is deprecated and returns nil
-func (info Info) GetUserByID(userID string) *User {
-	return nil
-}
-
-// GetChannelByID is deprecated and returns nil
-func (info Info) GetChannelByID(channelID string) *Channel {
-	return nil
-}
-
-// GetGroupByID is deprecated and returns nil
-func (info Info) GetGroupByID(groupID string) *Group {
-	return nil
-}
-
-// GetIMByID is deprecated and returns nil
-func (info Info) GetIMByID(imID string) *IM {
-	return nil
-}
--- a/vendor/github.com/pkg/errors/.travis.yml
+++ b/vendor/github.com/pkg/errors/.travis.yml
@ -1,15 +1,10 @@
 language: go
 go_import_path: github.com/pkg/errors
 go:
-  - 1.4.x
-  - 1.5.x
-  - 1.6.x
-  - 1.7.x
-  - 1.8.x
-  - 1.9.x
-  - 1.10.x
  - 1.11.x
+  - 1.12.x
+  - 1.13.x
  - tip

 script:
-  - go test -v ./...
+  - make check
--- a/vendor/github.com/pkg/errors/Makefile
+++ b/vendor/github.com/pkg/errors/Makefile
@ -0,0 +1,44 @@
+PKGS := github.com/pkg/errors
+SRCDIRS := $(shell go list -f '{{.Dir}}' $(PKGS))
+GO := go
+
+check: test vet gofmt misspell unconvert staticcheck ineffassign unparam
+
+test: 
+	$(GO) test $(PKGS)
+
+vet: | test
+	$(GO) vet $(PKGS)
+
+staticcheck:
+	$(GO) get honnef.co/go/tools/cmd/staticcheck
+	staticcheck -checks all $(PKGS)
+
+misspell:
+	$(GO) get github.com/client9/misspell/cmd/misspell
+	misspell \
+		-locale GB \
+		-error \
+		*.md *.go
+
+unconvert:
+	$(GO) get github.com/mdempsky/unconvert
+	unconvert -v $(PKGS)
+
+ineffassign:
+	$(GO) get github.com/gordonklaus/ineffassign
+	find $(SRCDIRS) -name '*.go' | xargs ineffassign
+
+pedantic: check errcheck
+
+unparam:
+	$(GO) get mvdan.cc/unparam
+	unparam ./...
+
+errcheck:
+	$(GO) get github.com/kisielk/errcheck
+	errcheck $(PKGS)
+
+gofmt:  
+	@echo Checking code is gofmted
+	@test -z "$(shell gofmt -s -l -d -e $(SRCDIRS) | tee /dev/stderr)"
--- a/vendor/github.com/pkg/errors/README.md
+++ b/vendor/github.com/pkg/errors/README.md
@ -41,11 +41,18 @@ default:

 [Read the package documentation for more information](https://godoc.org/github.com/pkg/errors).

+## Roadmap
+
+With the upcoming [Go2 error proposals](https://go.googlesource.com/proposal/+/master/design/go2draft.md) this package is moving into maintenance mode. The roadmap for a 1.0 release is as follows:
+
+- 0.9. Remove pre Go 1.9 and Go 1.10 support, address outstanding pull requests (if possible)
+- 1.0. Final release.
+
 ## Contributing

-We welcome pull requests, bug fixes and issue reports. With that said, the bar for adding new symbols to this package is intentionally set high.
+Because of the Go2 errors changes, this package is not accepting proposals for new functionality. With that said, we welcome pull requests, bug fixes and issue reports. 

-Before proposing a change, please discuss your change by raising an issue.
+Before sending a PR, please discuss your change by raising an issue.

 ## License

--- a/vendor/github.com/pkg/errors/errors.go
+++ b/vendor/github.com/pkg/errors/errors.go
@ -82,7 +82,7 @@
 //
 //     if err, ok := err.(stackTracer); ok {
 //             for _, f := range err.StackTrace() {
-//                     fmt.Printf("%+s:%d", f)
+//                     fmt.Printf("%+s:%d\n", f, f)
 //             }
 //     }
 //
@ -159,6 +159,9 @@ type withStack struct {

 func (w *withStack) Cause() error { return w.error }

+// Unwrap provides compatibility for Go 1.13 error chains.
+func (w *withStack) Unwrap() error { return w.error }
+
 func (w *withStack) Format(s fmt.State, verb rune) {
 	switch verb {
 	case 'v':
@ -241,6 +244,9 @@ type withMessage struct {
 func (w *withMessage) Error() string { return w.msg + ": " + w.cause.Error() }
 func (w *withMessage) Cause() error  { return w.cause }

+// Unwrap provides compatibility for Go 1.13 error chains.
+func (w *withMessage) Unwrap() error { return w.cause }
+
 func (w *withMessage) Format(s fmt.State, verb rune) {
 	switch verb {
 	case 'v':
--- a/vendor/github.com/pkg/errors/go113.go
+++ b/vendor/github.com/pkg/errors/go113.go
@ -0,0 +1,38 @@
+// +build go1.13
+
+package errors
+
+import (
+	stderrors "errors"
+)
+
+// Is reports whether any error in err's chain matches target.
+//
+// The chain consists of err itself followed by the sequence of errors obtained by
+// repeatedly calling Unwrap.
+//
+// An error is considered to match a target if it is equal to that target or if
+// it implements a method Is(error) bool such that Is(target) returns true.
+func Is(err, target error) bool { return stderrors.Is(err, target) }
+
+// As finds the first error in err's chain that matches target, and if so, sets
+// target to that error value and returns true.
+//
+// The chain consists of err itself followed by the sequence of errors obtained by
+// repeatedly calling Unwrap.
+//
+// An error matches target if the error's concrete value is assignable to the value
+// pointed to by target, or if the error has a method As(interface{}) bool such that
+// As(target) returns true. In the latter case, the As method is responsible for
+// setting target.
+//
+// As will panic if target is not a non-nil pointer to either a type that implements
+// error, or to any interface type. As returns false if err is nil.
+func As(err error, target interface{}) bool { return stderrors.As(err, target) }
+
+// Unwrap returns the result of calling the Unwrap method on err, if err's
+// type contains an Unwrap method returning error.
+// Otherwise, Unwrap returns nil.
+func Unwrap(err error) error {
+	return stderrors.Unwrap(err)
+}
--- a/vendor/github.com/pkg/errors/stack.go
+++ b/vendor/github.com/pkg/errors/stack.go
@ -5,10 +5,13 @@ import (
 	"io"
 	"path"
 	"runtime"
+	"strconv"
 	"strings"
 )

 // Frame represents a program counter inside a stack frame.
+// For historical reasons if Frame is interpreted as a uintptr
+// its value represents the program counter + 1.
 type Frame uintptr

 // pc returns the program counter for this frame;
@ -37,6 +40,15 @@ func (f Frame) line() int {
 	return line
 }

+// name returns the name of this function, if known.
+func (f Frame) name() string {
+	fn := runtime.FuncForPC(f.pc())
+	if fn == nil {
+		return "unknown"
+	}
+	return fn.Name()
+}
+
 // Format formats the frame according to the fmt.Formatter interface.
 //
 //    %s    source file
@ -54,22 +66,16 @@ func (f Frame) Format(s fmt.State, verb rune) {
 	case 's':
 		switch {
 		case s.Flag('+'):
-			pc := f.pc()
-			fn := runtime.FuncForPC(pc)
-			if fn == nil {
-				io.WriteString(s, "unknown")
-			} else {
-				file, _ := fn.FileLine(pc)
-				fmt.Fprintf(s, "%s\n\t%s", fn.Name(), file)
-			}
+			io.WriteString(s, f.name())
+			io.WriteString(s, "\n\t")
+			io.WriteString(s, f.file())
 		default:
 			io.WriteString(s, path.Base(f.file()))
 		}
 	case 'd':
-		fmt.Fprintf(s, "%d", f.line())
+		io.WriteString(s, strconv.Itoa(f.line()))
 	case 'n':
-		name := runtime.FuncForPC(f.pc()).Name()
-		io.WriteString(s, funcname(name))
+		io.WriteString(s, funcname(f.name()))
 	case 'v':
 		f.Format(s, 's')
 		io.WriteString(s, ":")
@ -77,6 +83,16 @@ func (f Frame) Format(s fmt.State, verb rune) {
 	}
 }

+// MarshalText formats a stacktrace Frame as a text string. The output is the
+// same as that of fmt.Sprintf("%+v", f), but without newlines or tabs.
+func (f Frame) MarshalText() ([]byte, error) {
+	name := f.name()
+	if name == "unknown" {
+		return []byte(name), nil
+	}
+	return []byte(fmt.Sprintf("%s %s:%d", name, f.file(), f.line())), nil
+}
+
 // StackTrace is stack of Frames from innermost (newest) to outermost (oldest).
 type StackTrace []Frame

@ -94,18 +110,32 @@ func (st StackTrace) Format(s fmt.State, verb rune) {
 		switch {
 		case s.Flag('+'):
 			for _, f := range st {
-				fmt.Fprintf(s, "\n%+v", f)
+				io.WriteString(s, "\n")
+				f.Format(s, verb)
 			}
 		case s.Flag('#'):
 			fmt.Fprintf(s, "%#v", []Frame(st))
 		default:
-			fmt.Fprintf(s, "%v", []Frame(st))
+			st.formatSlice(s, verb)
 		}
 	case 's':
-		fmt.Fprintf(s, "%s", []Frame(st))
+		st.formatSlice(s, verb)
 	}
 }

+// formatSlice will format this StackTrace into the given buffer as a slice of
+// Frame, only valid when called with '%s' or '%v'.
+func (st StackTrace) formatSlice(s fmt.State, verb rune) {
+	io.WriteString(s, "[")
+	for i, f := range st {
+		if i > 0 {
+			io.WriteString(s, " ")
+		}
+		f.Format(s, verb)
+	}
+	io.WriteString(s, "]")
+}
+
 // stack represents a stack of program counters.
 type stack []uintptr

--- a/vendor/github.com/slack-go/slack/.gitignore
+++ b/vendor/github.com/slack-go/slack/.gitignore
--- a/vendor/github.com/slack-go/slack/.gometalinter.json
+++ b/vendor/github.com/slack-go/slack/.gometalinter.json
--- a/vendor/github.com/slack-go/slack/.travis.yml
+++ b/vendor/github.com/slack-go/slack/.travis.yml
--- a/vendor/github.com/slack-go/slack/CHANGELOG.md
+++ b/vendor/github.com/slack-go/slack/CHANGELOG.md
--- a/vendor/github.com/slack-go/slack/LICENSE
+++ b/vendor/github.com/slack-go/slack/LICENSE
--- a/vendor/github.com/slack-go/slack/Makefile
+++ b/vendor/github.com/slack-go/slack/Makefile
@ -0,0 +1,36 @@
+.PHONY: help deps fmt lint test test-race test-integration
+
+help:
+	@echo ""
+	@echo "Welcome to slack-go/slack make."
+	@echo "The following commands are available:"
+	@echo ""
+	@echo "    make deps              : Fetch all dependencies"
+	@echo "    make fmt               : Run go fmt to fix any formatting issues"
+	@echo "    make lint              : Use go vet to check for linting issues"
+	@echo "    make test              : Run all short tests"
+	@echo "    make test-race         : Run all tests with race condition checking"
+	@echo "    make test-integration  : Run all tests without limiting to short"
+	@echo ""
+	@echo "    make pr-prep           : Run this before making a PR to run fmt, lint and tests"
+	@echo ""
+
+deps:
+	@go mod tidy
+
+fmt:
+	@go fmt .
+
+lint:
+	@go vet .
+
+test:
+	@go test -v -count=1 -timeout 300s -short ./...
+
+test-race:
+	@go test -v -count=1 -timeout 300s -short -race ./...
+
+test-integration:
+	@go test -v -count=1 -timeout 600s ./...
+
+pr-prep: fmt lint test-race test-integration
--- a/vendor/github.com/slack-go/slack/README.md
+++ b/vendor/github.com/slack-go/slack/README.md
@ -1,5 +1,6 @@
-Slack API in Go [![GoDoc](https://godoc.org/github.com/nlopes/slack?status.svg)](https://godoc.org/github.com/nlopes/slack) [![Build Status](https://travis-ci.org/nlopes/slack.svg)](https://travis-ci.org/nlopes/slack)
+Slack API in Go [![GoDoc](https://godoc.org/github.com/slack-go/slack?status.svg)](https://godoc.org/github.com/slack-go/slack) [![Build Status](https://travis-ci.org/slack-go/slack.svg)](https://travis-ci.org/slack-go/slack)
 ===============
+This is the original Slack library for Go created by Norberto Lopez, transferred to a Github organization.

 [![Join the chat at https://gitter.im/go-slack/Lobby](https://badges.gitter.im/go-slack/Lobby.svg)](https://gitter.im/go-slack/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)

@ -12,13 +13,13 @@ a fully managed way.

 ## Changelog

-[CHANGELOG.md](https://github.com/nlopes/slack/blob/master/CHANGELOG.md) is available. Please visit it for updates.
+[CHANGELOG.md](https://github.com/slack-go/slack/blob/master/CHANGELOG.md) is available. Please visit it for updates.

 ## Installing

 ### *go get*

-    $ go get -u github.com/nlopes/slack
+    $ go get -u github.com/slack-go/slack

 ## Example

@ -28,7 +29,7 @@ a fully managed way.
 import (
 	"fmt"

-	"github.com/nlopes/slack"
+	"github.com/slack-go/slack"
 )

 func main() {
@ -53,7 +54,7 @@ func main() {
 import (
    "fmt"

-    "github.com/nlopes/slack"
+    "github.com/slack-go/slack"
 )

 func main() {
@ -69,12 +70,12 @@ func main() {

 ## Minimal RTM usage:

-See https://github.com/nlopes/slack/blob/master/examples/websocket/websocket.go
+See https://github.com/slack-go/slack/blob/master/examples/websocket/websocket.go


 ## Minimal EventsAPI usage:

-See https://github.com/nlopes/slack/blob/master/examples/eventsapi/events.go
+See https://github.com/slack-go/slack/blob/master/examples/eventsapi/events.go


 ## Contributing
@ -82,6 +83,14 @@ See https://github.com/nlopes/slack/blob/master/examples/eventsapi/events.go
 You are more than welcome to contribute to this project.  Fork and
 make a Pull Request, or create an Issue if you see any problem.

+Before making any Pull Request please run the following:
+
+```
+make pr-prep
+```
+
+This will check/update code formatting, linting and then run all tests
+
 ## License

 BSD 2 Clause license
--- a/vendor/github.com/slack-go/slack/TODO.txt
+++ b/vendor/github.com/slack-go/slack/TODO.txt
--- a/vendor/github.com/slack-go/slack/admin.go
+++ b/vendor/github.com/slack-go/slack/admin.go
--- a/vendor/github.com/slack-go/slack/attachments.go
+++ b/vendor/github.com/slack-go/slack/attachments.go
@ -84,7 +84,7 @@ type Attachment struct {
 	Actions    []AttachmentAction `json:"actions,omitempty"`
 	MarkdownIn []string           `json:"mrkdwn_in,omitempty"`

-	Blocks []Block `json:"blocks,omitempty"`
+	Blocks Blocks `json:"blocks,omitempty"`

 	Footer     string `json:"footer,omitempty"`
 	FooterIcon string `json:"footer_icon,omitempty"`
--- a/vendor/github.com/slack-go/slack/auth.go
+++ b/vendor/github.com/slack-go/slack/auth.go
@ -27,7 +27,7 @@ func (api *Client) SendAuthRevoke(token string) (*AuthRevokeResponse, error) {
 	return api.SendAuthRevokeContext(context.Background(), token)
 }

-// SendAuthRevokeContext will retrieve the satus from api.test
+// SendAuthRevokeContext will send a revocation request for our token to api.revoke with context
 func (api *Client) SendAuthRevokeContext(ctx context.Context, token string) (*AuthRevokeResponse, error) {
 	if token == "" {
 		token = api.token
--- a/vendor/github.com/slack-go/slack/backoff.go
+++ b/vendor/github.com/slack-go/slack/backoff.go
--- a/vendor/github.com/slack-go/slack/block.go
+++ b/vendor/github.com/slack-go/slack/block.go
@ -14,6 +14,8 @@ const (
 	MBTImage   MessageBlockType = "image"
 	MBTAction  MessageBlockType = "actions"
 	MBTContext MessageBlockType = "context"
+	MBTFile    MessageBlockType = "file"
+	MBTInput   MessageBlockType = "input"
 )

 // Block defines an interface all block types should implement
--- a/vendor/github.com/slack-go/slack/block_action.go
+++ b/vendor/github.com/slack-go/slack/block_action.go
--- a/vendor/github.com/slack-go/slack/block_context.go
+++ b/vendor/github.com/slack-go/slack/block_context.go
--- a/vendor/github.com/slack-go/slack/block_conv.go
+++ b/vendor/github.com/slack-go/slack/block_conv.go
@ -56,15 +56,16 @@ func (b *Blocks) UnmarshalJSON(data []byte) error {
 			block = &ContextBlock{}
 		case "divider":
 			block = &DividerBlock{}
+		case "file":
+			block = &FileBlock{}
 		case "image":
 			block = &ImageBlock{}
+		case "input":
+			block = &InputBlock{}
 		case "section":
 			block = &SectionBlock{}
-		case "rich_text":
-			// for now ignore the (complex) content of rich_text blocks until we can fully support it
-			continue
 		default:
-			return errors.New("unsupported block type")
+			block = &UnknownBlock{}
 		}

 		err = json.Unmarshal(r, block)
@ -79,6 +80,46 @@ func (b *Blocks) UnmarshalJSON(data []byte) error {
 	return nil
 }

+// UnmarshalJSON implements the Unmarshaller interface for InputBlock, so that any JSON
+// unmarshalling is delegated and proper type determination can be made before unmarshal
+func (b *InputBlock) UnmarshalJSON(data []byte) error {
+	type alias InputBlock
+	a := struct {
+		Element json.RawMessage `json:"element"`
+		*alias
+	}{
+		alias: (*alias)(b),
+	}
+
+	if err := json.Unmarshal(data, &a); err != nil {
+		return err
+	}
+
+	s := sumtype{}
+	if err := json.Unmarshal(a.Element, &s); err != nil {
+		return nil
+	}
+
+	var e BlockElement
+	switch s.TypeVal {
+	case "datepicker":
+		e = &DatePickerBlockElement{}
+	case "plain_text_input":
+		e = &PlainTextInputBlockElement{}
+	case "static_select", "external_select", "users_select", "conversations_select", "channels_select":
+		e = &SelectBlockElement{}
+	default:
+		return errors.New("unsupported block element type")
+	}
+
+	if err := json.Unmarshal(a.Element, e); err != nil {
+		return err
+	}
+	b.Element = e
+
+	return nil
+}
+
 // MarshalJSON implements the Marshaller interface for BlockElements so that any JSON
 // marshalling is delegated and proper type determination can be made before marshal
 func (b *BlockElements) MarshalJSON() ([]byte, error) {
@ -127,6 +168,8 @@ func (b *BlockElements) UnmarshalJSON(data []byte) error {
 			blockElement = &OverflowBlockElement{}
 		case "datepicker":
 			blockElement = &DatePickerBlockElement{}
+		case "plain_text_input":
+			blockElement = &PlainTextInputBlockElement{}
 		case "static_select", "external_select", "users_select", "conversations_select", "channels_select":
 			blockElement = &SelectBlockElement{}
 		default:
@ -206,12 +249,36 @@ func (a *Accessory) UnmarshalJSON(data []byte) error {
 			return err
 		}
 		a.DatePickerElement = element.(*DatePickerBlockElement)
-	case "static_select":
+	case "plain_text_input":
+		element, err := unmarshalBlockElement(r, &PlainTextInputBlockElement{})
+		if err != nil {
+			return err
+		}
+		a.PlainTextInputElement = element.(*PlainTextInputBlockElement)
+	case "radio_buttons":
+		element, err := unmarshalBlockElement(r, &RadioButtonsBlockElement{})
+		if err != nil {
+			return err
+		}
+		a.RadioButtonsElement = element.(*RadioButtonsBlockElement)
+	case "static_select", "external_select", "users_select", "conversations_select", "channels_select":
 		element, err := unmarshalBlockElement(r, &SelectBlockElement{})
 		if err != nil {
 			return err
 		}
 		a.SelectElement = element.(*SelectBlockElement)
+	case "multi_static_select", "multi_external_select", "multi_users_select", "multi_conversations_select", "multi_channels_select":
+		element, err := unmarshalBlockElement(r, &MultiSelectBlockElement{})
+		if err != nil {
+			return err
+		}
+		a.MultiSelectElement = element.(*MultiSelectBlockElement)
+	default:
+		element, err := unmarshalBlockElement(r, &UnknownBlockElement{})
+		if err != nil {
+			return err
+		}
+		a.UnknownElement = element.(*UnknownBlockElement)
 	}

 	return nil
@ -238,9 +305,18 @@ func toBlockElement(element *Accessory) BlockElement {
 	if element.DatePickerElement != nil {
 		return element.DatePickerElement
 	}
+	if element.PlainTextInputElement != nil {
+		return element.PlainTextInputElement
+	}
+	if element.RadioButtonsElement != nil {
+		return element.RadioButtonsElement
+	}
 	if element.SelectElement != nil {
 		return element.SelectElement
 	}
+	if element.MultiSelectElement != nil {
+		return element.MultiSelectElement
+	}

 	return nil
 }
--- a/vendor/github.com/slack-go/slack/block_divider.go
+++ b/vendor/github.com/slack-go/slack/block_divider.go
--- a/vendor/github.com/slack-go/slack/block_element.go
+++ b/vendor/github.com/slack-go/slack/block_element.go
@ -3,10 +3,12 @@ package slack
 // https://api.slack.com/reference/messaging/block-elements

 const (
-	METImage      MessageElementType = "image"
-	METButton     MessageElementType = "button"
-	METOverflow   MessageElementType = "overflow"
-	METDatepicker MessageElementType = "datepicker"
+	METImage          MessageElementType = "image"
+	METButton         MessageElementType = "button"
+	METOverflow       MessageElementType = "overflow"
+	METDatepicker     MessageElementType = "datepicker"
+	METPlainTextInput MessageElementType = "plain_text_input"
+	METRadioButtons   MessageElementType = "radio_buttons"

 	MixedElementImage MixedElementType = "mixed_image"
 	MixedElementText  MixedElementType = "mixed_text"
@ -16,6 +18,12 @@ const (
 	OptTypeUser          string = "users_select"
 	OptTypeConversations string = "conversations_select"
 	OptTypeChannels      string = "channels_select"
+
+	MultiOptTypeStatic        string = "multi_static_select"
+	MultiOptTypeExternal      string = "multi_external_select"
+	MultiOptTypeUser          string = "multi_users_select"
+	MultiOptTypeConversations string = "multi_conversations_select"
+	MultiOptTypeChannels      string = "multi_channels_select"
 )

 type MessageElementType string
@ -31,11 +39,15 @@ type MixedElement interface {
 }

 type Accessory struct {
-	ImageElement      *ImageBlockElement
-	ButtonElement     *ButtonBlockElement
-	OverflowElement   *OverflowBlockElement
-	DatePickerElement *DatePickerBlockElement
-	SelectElement     *SelectBlockElement
+	ImageElement          *ImageBlockElement
+	ButtonElement         *ButtonBlockElement
+	OverflowElement       *OverflowBlockElement
+	DatePickerElement     *DatePickerBlockElement
+	PlainTextInputElement *PlainTextInputBlockElement
+	RadioButtonsElement   *RadioButtonsBlockElement
+	SelectElement         *SelectBlockElement
+	MultiSelectElement    *MultiSelectBlockElement
+	UnknownElement        *UnknownBlockElement
 }

 // NewAccessory returns a new Accessory for a given block element
@ -49,11 +61,17 @@ func NewAccessory(element BlockElement) *Accessory {
 		return &Accessory{OverflowElement: element.(*OverflowBlockElement)}
 	case *DatePickerBlockElement:
 		return &Accessory{DatePickerElement: element.(*DatePickerBlockElement)}
+	case *PlainTextInputBlockElement:
+		return &Accessory{PlainTextInputElement: element.(*PlainTextInputBlockElement)}
+	case *RadioButtonsBlockElement:
+		return &Accessory{RadioButtonsElement: element.(*RadioButtonsBlockElement)}
 	case *SelectBlockElement:
 		return &Accessory{SelectElement: element.(*SelectBlockElement)}
+	case *MultiSelectBlockElement:
+		return &Accessory{MultiSelectElement: element.(*MultiSelectBlockElement)}
+	default:
+		return &Accessory{UnknownElement: element.(*UnknownBlockElement)}
 	}
-
-	return nil
 }

 // BlockElements is a convenience struct defined to allow dynamic unmarshalling of
@ -62,6 +80,20 @@ type BlockElements struct {
 	ElementSet []BlockElement `json:"elements,omitempty"`
 }

+// UnknownBlockElement any block element that this library does not directly support.
+// See the "Rich Elements" section at the following URL:
+// https://api.slack.com/changelog/2019-09-what-they-see-is-what-you-get-and-more-and-less
+// New block element types may be introduced by Slack at any time; this is a catch-all for any such block elements.
+type UnknownBlockElement struct {
+	Type     MessageElementType `json:"type"`
+	Elements BlockElements
+}
+
+// ElementType returns the type of the Element
+func (s UnknownBlockElement) ElementType() MessageElementType {
+	return s.Type
+}
+
 // ImageBlockElement An element to insert an image - this element can be used
 // in section and context blocks only. If you want a block with only an image
 // in it, you're looking for the image block.
@ -134,6 +166,20 @@ func NewButtonBlockElement(actionID, value string, text *TextBlockObject) *Butto
 	}
 }

+// OptionsResponse defines the response used for select block typahead.
+//
+// More Information: https://api.slack.com/reference/block-kit/block-elements#external_multi_select
+type OptionsResponse struct {
+	Options []*OptionBlockObject `json:"options,omitempty"`
+}
+
+// OptionGroupsResponse defines the response used for select block typahead.
+//
+// More Information: https://api.slack.com/reference/block-kit/block-elements#external_multi_select
+type OptionGroupsResponse struct {
+	OptionGroups []*OptionGroupBlockObject `json:"option_groups,omitempty"`
+}
+
 // SelectBlockElement defines the simplest form of select menu, with a static list
 // of options passed in when defining the element.
 //
@ -148,7 +194,7 @@ type SelectBlockElement struct {
 	InitialUser         string                    `json:"initial_user,omitempty"`
 	InitialConversation string                    `json:"initial_conversation,omitempty"`
 	InitialChannel      string                    `json:"initial_channel,omitempty"`
-	MinQueryLength      int                       `json:"min_query_length,omitempty"`
+	MinQueryLength      *int                      `json:"min_query_length,omitempty"`
 	Confirm             *ConfirmationBlockObject  `json:"confirm,omitempty"`
 }

@ -184,6 +230,56 @@ func NewOptionsGroupSelectBlockElement(
 	}
 }

+// MultiSelectBlockElement defines a multiselect menu, with a static list
+// of options passed in when defining the element.
+//
+// More Information: https://api.slack.com/reference/messaging/block-elements#multi_select
+type MultiSelectBlockElement struct {
+	Type                 string                    `json:"type,omitempty"`
+	Placeholder          *TextBlockObject          `json:"placeholder,omitempty"`
+	ActionID             string                    `json:"action_id,omitempty"`
+	Options              []*OptionBlockObject      `json:"options,omitempty"`
+	OptionGroups         []*OptionGroupBlockObject `json:"option_groups,omitempty"`
+	InitialOptions       []*OptionBlockObject      `json:"initial_options,omitempty"`
+	InitialUsers         []string                  `json:"initial_users,omitempty"`
+	InitialConversations []string                  `json:"initial_conversations,omitempty"`
+	InitialChannels      []string                  `json:"initial_channels,omitempty"`
+	MinQueryLength       *int                      `json:"min_query_length,omitempty"`
+	Confirm              *ConfirmationBlockObject  `json:"confirm,omitempty"`
+}
+
+// ElementType returns the type of the Element
+func (s MultiSelectBlockElement) ElementType() MessageElementType {
+	return MessageElementType(s.Type)
+}
+
+// NewOptionsMultiSelectBlockElement returns a new instance of SelectBlockElement for use with
+// the Options object only.
+func NewOptionsMultiSelectBlockElement(optType string, placeholder *TextBlockObject, actionID string, options ...*OptionBlockObject) *MultiSelectBlockElement {
+	return &MultiSelectBlockElement{
+		Type:        optType,
+		Placeholder: placeholder,
+		ActionID:    actionID,
+		Options:     options,
+	}
+}
+
+// NewOptionsGroupMultiSelectBlockElement returns a new instance of MultiSelectBlockElement for use with
+// the Options object only.
+func NewOptionsGroupMultiSelectBlockElement(
+	optType string,
+	placeholder *TextBlockObject,
+	actionID string,
+	optGroups ...*OptionGroupBlockObject,
+) *MultiSelectBlockElement {
+	return &MultiSelectBlockElement{
+		Type:         optType,
+		Placeholder:  placeholder,
+		ActionID:     actionID,
+		OptionGroups: optGroups,
+	}
+}
+
 // OverflowBlockElement defines the fields needed to use an overflow element.
 // And Overflow Element is like a cross between a button and a select menu -
 // when a user clicks on this overflow button, they will be presented with a
@ -236,3 +332,59 @@ func NewDatePickerBlockElement(actionID string) *DatePickerBlockElement {
 		ActionID: actionID,
 	}
 }
+
+// PlainTextInputBlockElement creates a field where a user can enter freeform
+// data.
+// Plain-text input elements are currently only available in modals.
+//
+// More Information: https://api.slack.com/reference/block-kit/block-elements#input
+type PlainTextInputBlockElement struct {
+	Type         MessageElementType `json:"type"`
+	ActionID     string             `json:"action_id"`
+	Placeholder  *TextBlockObject   `json:"placeholder,omitempty"`
+	InitialValue string             `json:"initial_value,omitempty"`
+	Multiline    bool               `json:"multiline,omitempty"`
+	MinLength    int                `json:"min_length,omitempty"`
+	MaxLength    int                `json:"max_length,omitempty"`
+}
+
+// ElementType returns the type of the Element
+func (s PlainTextInputBlockElement) ElementType() MessageElementType {
+	return s.Type
+}
+
+// NewPlainTextInputBlockElement returns an instance of a plain-text input
+// element
+func NewPlainTextInputBlockElement(placeholder *TextBlockObject, actionID string) *PlainTextInputBlockElement {
+	return &PlainTextInputBlockElement{
+		Type:        METPlainTextInput,
+		ActionID:    actionID,
+		Placeholder: placeholder,
+	}
+}
+
+// RadioButtonsBlockElement defines an element which lets users choose one item
+// from a list of possible options.
+//
+// More Information: https://api.slack.com/reference/block-kit/block-elements#radio
+type RadioButtonsBlockElement struct {
+	Type          MessageElementType       `json:"type"`
+	ActionID      string                   `json:"action_id"`
+	Options       []*OptionBlockObject     `json:"options"`
+	InitialOption *OptionBlockObject       `json:"initial_option,omitempty"`
+	Confirm       *ConfirmationBlockObject `json:"confirm,omitempty"`
+}
+
+// ElementType returns the type of the Element
+func (s RadioButtonsBlockElement) ElementType() MessageElementType {
+	return s.Type
+}
+
+// NewRadioButtonsBlockElement returns an instance of a radio buttons element.
+func NewRadioButtonsBlockElement(actionID string, options ...*OptionBlockObject) *RadioButtonsBlockElement {
+	return &RadioButtonsBlockElement{
+		Type:     METRadioButtons,
+		ActionID: actionID,
+		Options:  options,
+	}
+}
--- a/vendor/github.com/slack-go/slack/block_file.go
+++ b/vendor/github.com/slack-go/slack/block_file.go
@ -0,0 +1,26 @@
+package slack
+
+// FileBlock defines data that is used to display a remote file.
+//
+// More Information: https://api.slack.com/reference/block-kit/blocks#file
+type FileBlock struct {
+	Type       MessageBlockType `json:"type"`
+	BlockID    string           `json:"block_id,omitempty"`
+	ExternalID string           `json:"external_id"`
+	Source     string           `json:"source"`
+}
+
+// BlockType returns the type of the block
+func (s FileBlock) BlockType() MessageBlockType {
+	return s.Type
+}
+
+// NewFileBlock returns a new instance of a file block
+func NewFileBlock(blockID string, externalID string, source string) *FileBlock {
+	return &FileBlock{
+		Type:       MBTFile,
+		BlockID:    blockID,
+		ExternalID: externalID,
+		Source:     source,
+	}
+}
--- a/vendor/github.com/slack-go/slack/block_image.go
+++ b/vendor/github.com/slack-go/slack/block_image.go
--- a/vendor/github.com/slack-go/slack/block_input.go
+++ b/vendor/github.com/slack-go/slack/block_input.go
@ -0,0 +1,28 @@
+package slack
+
+// InputBlock defines data that is used to display user input fields.
+//
+// More Information: https://api.slack.com/reference/block-kit/blocks#input
+type InputBlock struct {
+	Type     MessageBlockType `json:"type"`
+	BlockID  string           `json:"block_id,omitempty"`
+	Label    *TextBlockObject `json:"label"`
+	Element  BlockElement     `json:"element"`
+	Hint     *TextBlockObject `json:"hint,omitempty"`
+	Optional bool             `json:"optional,omitempty"`
+}
+
+// BlockType returns the type of the block
+func (s InputBlock) BlockType() MessageBlockType {
+	return s.Type
+}
+
+// NewInputBlock returns a new instance of an input block
+func NewInputBlock(blockID string, label *TextBlockObject, element BlockElement) *InputBlock {
+	return &InputBlock{
+		Type:    MBTInput,
+		BlockID: blockID,
+		Label:   label,
+		Element: element,
+	}
+}
--- a/vendor/github.com/slack-go/slack/block_object.go
+++ b/vendor/github.com/slack-go/slack/block_object.go
@ -145,6 +145,14 @@ func NewTextBlockObject(elementType, text string, emoji, verbatim bool) *TextBlo
 	}
 }

+// BlockType returns the type of the block
+func (t TextBlockObject) BlockType() MessageBlockType {
+	if t.Type == "mrkdown" {
+		return MarkdownType
+	}
+	return PlainTextType
+}
+
 // ConfirmationBlockObject defines a dialog that provides a confirmation step to
 // any interactive element. This dialog will ask the user to confirm their action by
 // offering a confirm and deny buttons.
--- a/vendor/github.com/slack-go/slack/block_section.go
+++ b/vendor/github.com/slack-go/slack/block_section.go
--- a/vendor/github.com/slack-go/slack/block_unknown.go
+++ b/vendor/github.com/slack-go/slack/block_unknown.go
@ -0,0 +1,13 @@
+package slack
+
+// UnknownBlock represents a block type that is not yet known. This block type exists to prevent Slack from introducing
+// new and unknown block types that break this library.
+type UnknownBlock struct {
+	Type    MessageBlockType `json:"type"`
+	BlockID string           `json:"block_id,omitempty"`
+}
+
+// BlockType returns the type of the block
+func (b UnknownBlock) BlockType() MessageBlockType {
+	return b.Type
+}
--- a/vendor/github.com/slack-go/slack/bots.go
+++ b/vendor/github.com/slack-go/slack/bots.go
--- a/vendor/github.com/slack-go/slack/channels.go
+++ b/vendor/github.com/slack-go/slack/channels.go
@ -4,6 +4,7 @@ import (
 	"context"
 	"net/url"
 	"strconv"
+	"time"
 )

 type channelResponseFull struct {
@ -14,6 +15,7 @@ type channelResponseFull struct {
 	NotInChannel bool      `json:"not_in_channel"`
 	History
 	SlackResponse
+	Metadata ResponseMetadata `json:"response_metadata"`
 }

 // Channel contains information about the channel
@ -35,25 +37,21 @@ func (api *Client) channelRequest(ctx context.Context, path string, values url.V
 	return response, response.Err()
 }

-type channelsConfig struct {
-	values url.Values
-}
-
 // GetChannelsOption option provided when getting channels.
-type GetChannelsOption func(*channelsConfig) error
+type GetChannelsOption func(*ChannelPagination) error

 // GetChannelsOptionExcludeMembers excludes the members collection from each channel.
 func GetChannelsOptionExcludeMembers() GetChannelsOption {
-	return func(config *channelsConfig) error {
-		config.values.Add("exclude_members", "true")
+	return func(p *ChannelPagination) error {
+		p.excludeMembers = true
 		return nil
 	}
 }

 // GetChannelsOptionExcludeArchived excludes archived channels from results.
 func GetChannelsOptionExcludeArchived() GetChannelsOption {
-	return func(config *channelsConfig) error {
-		config.values.Add("exclude_archived", "true")
+	return func(p *ChannelPagination) error {
+		p.excludeArchived = true
 		return nil
 	}
 }
@ -266,6 +264,78 @@ func (api *Client) KickUserFromChannelContext(ctx context.Context, channelID, us
 	return err
 }

+func newChannelPagination(c *Client, options ...GetChannelsOption) (cp ChannelPagination) {
+	cp = ChannelPagination{
+		c:     c,
+		limit: 200, // per slack api documentation.
+	}
+
+	for _, opt := range options {
+		opt(&cp)
+	}
+
+	return cp
+}
+
+// ChannelPagination allows for paginating over the channels
+type ChannelPagination struct {
+	Channels        []Channel
+	limit           int
+	excludeArchived bool
+	excludeMembers  bool
+	previousResp    *ResponseMetadata
+	c               *Client
+}
+
+// Done checks if the pagination has completed
+func (ChannelPagination) Done(err error) bool {
+	return err == errPaginationComplete
+}
+
+// Failure checks if pagination failed.
+func (t ChannelPagination) Failure(err error) error {
+	if t.Done(err) {
+		return nil
+	}
+
+	return err
+}
+
+func (t ChannelPagination) Next(ctx context.Context) (_ ChannelPagination, err error) {
+	var (
+		resp *channelResponseFull
+	)
+
+	if t.c == nil || (t.previousResp != nil && t.previousResp.Cursor == "") {
+		return t, errPaginationComplete
+	}
+
+	t.previousResp = t.previousResp.initialize()
+
+	values := url.Values{
+		"limit":            {strconv.Itoa(t.limit)},
+		"exclude_archived": {strconv.FormatBool(t.excludeArchived)},
+		"exclude_members":  {strconv.FormatBool(t.excludeMembers)},
+		"token":            {t.c.token},
+		"cursor":           {t.previousResp.Cursor},
+	}
+
+	if resp, err = t.c.channelRequest(ctx, "channels.list", values); err != nil {
+		return t, err
+	}
+
+	t.c.Debugf("GetChannelsContext: got %d channels; metadata %v", len(resp.Channels), resp.Metadata)
+	t.Channels = resp.Channels
+	t.previousResp = &resp.Metadata
+
+	return t, nil
+}
+
+// GetChannelsPaginated fetches channels in a paginated fashion, see GetChannelsContext for usage.
+func (api *Client) GetChannelsPaginated(options ...GetChannelsOption) ChannelPagination {
+	return newChannelPagination(api, options...)
+}
+
 // GetChannels retrieves all the channels
 // see https://api.slack.com/methods/channels.list
 func (api *Client) GetChannels(excludeArchived bool, options ...GetChannelsOption) ([]Channel, error) {
@ -274,28 +344,27 @@ func (api *Client) GetChannels(excludeArchived bool, options ...GetChannelsOptio

 // GetChannelsContext retrieves all the channels with a custom context
 // see https://api.slack.com/methods/channels.list
-func (api *Client) GetChannelsContext(ctx context.Context, excludeArchived bool, options ...GetChannelsOption) ([]Channel, error) {
-	config := channelsConfig{
-		values: url.Values{
-			"token": {api.token},
-		},
-	}
-
+func (api *Client) GetChannelsContext(ctx context.Context, excludeArchived bool, options ...GetChannelsOption) (results []Channel, err error) {
 	if excludeArchived {
 		options = append(options, GetChannelsOptionExcludeArchived())
 	}

-	for _, opt := range options {
-		if err := opt(&config); err != nil {
-			return nil, err
+	p := api.GetChannelsPaginated(options...)
+	for err == nil {
+		p, err = p.Next(ctx)
+		if err == nil {
+			results = append(results, p.Channels...)
+		} else if rateLimitedError, ok := err.(*RateLimitedError); ok {
+			select {
+			case <-ctx.Done():
+				err = ctx.Err()
+			case <-time.After(rateLimitedError.RetryAfter):
+				err = nil
+			}
 		}
 	}

-	response, err := api.channelRequest(ctx, "channels.list", config.values)
-	if err != nil {
-		return nil, err
-	}
-	return response.Channels, nil
+	return results, p.Failure(err)
 }

 // SetChannelReadMark sets the read mark of a given channel to a specific point
--- a/vendor/github.com/slack-go/slack/chat.go
+++ b/vendor/github.com/slack-go/slack/chat.go
@ -5,8 +5,9 @@ import (
 	"encoding/json"
 	"net/http"
 	"net/url"
+	"strconv"

-	"github.com/nlopes/slack/slackutilsx"
+	"github.com/slack-go/slack/slackutilsx"
 )

 const (
@ -25,10 +26,11 @@ const (
 )

 type chatResponseFull struct {
-	Channel          string `json:"channel"`
-	Timestamp        string `json:"ts"`         //Regular message timestamp
-	MessageTimeStamp string `json:"message_ts"` //Ephemeral message timestamp
-	Text             string `json:"text"`
+	Channel            string `json:"channel"`
+	Timestamp          string `json:"ts"`                             //Regular message timestamp
+	MessageTimeStamp   string `json:"message_ts"`                     //Ephemeral message timestamp
+	ScheduledMessageID string `json:"scheduled_message_id,omitempty"` //Scheduled message id
+	Text               string `json:"text"`
 	SlackResponse
 }

@ -82,13 +84,34 @@ func NewPostMessageParameters() PostMessageParameters {

 // DeleteMessage deletes a message in a channel
 func (api *Client) DeleteMessage(channel, messageTimestamp string) (string, string, error) {
-	respChannel, respTimestamp, _, err := api.SendMessageContext(context.Background(), channel, MsgOptionDelete(messageTimestamp))
+	respChannel, respTimestamp, _, err := api.SendMessageContext(
+		context.Background(),
+		channel,
+		MsgOptionDelete(messageTimestamp),
+	)
 	return respChannel, respTimestamp, err
 }

 // DeleteMessageContext deletes a message in a channel with a custom context
 func (api *Client) DeleteMessageContext(ctx context.Context, channel, messageTimestamp string) (string, string, error) {
-	respChannel, respTimestamp, _, err := api.SendMessageContext(ctx, channel, MsgOptionDelete(messageTimestamp))
+	respChannel, respTimestamp, _, err := api.SendMessageContext(
+		ctx,
+		channel,
+		MsgOptionDelete(messageTimestamp),
+	)
+	return respChannel, respTimestamp, err
+}
+
+// ScheduleMessage sends a message to a channel.
+// Message is escaped by default according to https://api.slack.com/docs/formatting
+// Use http://davestevens.github.io/slack-message-builder/ to help crafting your message.
+func (api *Client) ScheduleMessage(channelID, postAt string, options ...MsgOption) (string, string, error) {
+	respChannel, respTimestamp, _, err := api.SendMessageContext(
+		context.Background(),
+		channelID,
+		MsgOptionSchedule(postAt),
+		MsgOptionCompose(options...),
+	)
 	return respChannel, respTimestamp, err
 }

@ -132,18 +155,33 @@ func (api *Client) PostEphemeral(channelID, userID string, options ...MsgOption)
 // PostEphemeralContext sends an ephemeal message to a user in a channel with a custom context
 // For more details, see PostEphemeral documentation
 func (api *Client) PostEphemeralContext(ctx context.Context, channelID, userID string, options ...MsgOption) (timestamp string, err error) {
-	_, timestamp, _, err = api.SendMessageContext(ctx, channelID, MsgOptionPostEphemeral(userID), MsgOptionCompose(options...))
+	_, timestamp, _, err = api.SendMessageContext(
+		ctx,
+		channelID,
+		MsgOptionPostEphemeral(userID),
+		MsgOptionCompose(options...),
+	)
 	return timestamp, err
 }

 // UpdateMessage updates a message in a channel
 func (api *Client) UpdateMessage(channelID, timestamp string, options ...MsgOption) (string, string, string, error) {
-	return api.SendMessageContext(context.Background(), channelID, MsgOptionUpdate(timestamp), MsgOptionCompose(options...))
+	return api.SendMessageContext(
+		context.Background(),
+		channelID,
+		MsgOptionUpdate(timestamp),
+		MsgOptionCompose(options...),
+	)
 }

 // UpdateMessageContext updates a message in a channel
 func (api *Client) UpdateMessageContext(ctx context.Context, channelID, timestamp string, options ...MsgOption) (string, string, string, error) {
-	return api.SendMessageContext(ctx, channelID, MsgOptionUpdate(timestamp), MsgOptionCompose(options...))
+	return api.SendMessageContext(
+		ctx,
+		channelID,
+		MsgOptionUpdate(timestamp),
+		MsgOptionCompose(options...),
+	)
 }

 // UnfurlMessage unfurls a message in a channel
@ -212,13 +250,14 @@ func buildSender(apiurl string, options ...MsgOption) sendConfig {
 type sendMode string

 const (
-	chatUpdate        sendMode = "chat.update"
-	chatPostMessage   sendMode = "chat.postMessage"
-	chatDelete        sendMode = "chat.delete"
-	chatPostEphemeral sendMode = "chat.postEphemeral"
-	chatResponse      sendMode = "chat.responseURL"
-	chatMeMessage     sendMode = "chat.meMessage"
-	chatUnfurl        sendMode = "chat.unfurl"
+	chatUpdate          sendMode = "chat.update"
+	chatPostMessage     sendMode = "chat.postMessage"
+	chatScheduleMessage sendMode = "chat.scheduleMessage"
+	chatDelete          sendMode = "chat.delete"
+	chatPostEphemeral   sendMode = "chat.postEphemeral"
+	chatResponse        sendMode = "chat.responseURL"
+	chatMeMessage       sendMode = "chat.meMessage"
+	chatUnfurl          sendMode = "chat.unfurl"
 )

 type sendConfig struct {
@ -287,6 +326,15 @@ func (t responseURLSender) BuildRequest() (*http.Request, func(*chatResponseFull
 // MsgOption option provided when sending a message.
 type MsgOption func(*sendConfig) error

+// MsgOptionSchedule schedules a messages.
+func MsgOptionSchedule(postAt string) MsgOption {
+	return func(config *sendConfig) error {
+		config.endpoint = config.apiurl + string(chatScheduleMessage)
+		config.values.Add("post_at", postAt)
+		return nil
+	}
+}
+
 // MsgOptionPost posts a messages, this is the default.
 func MsgOptionPost() MsgOption {
 	return func(config *sendConfig) error {
@ -347,11 +395,11 @@ func MsgOptionUnfurl(timestamp string, unfurls map[string]Attachment) MsgOption
 }

 // MsgOptionResponseURL supplies a url to use as the endpoint.
-func MsgOptionResponseURL(url string, rt string) MsgOption {
+func MsgOptionResponseURL(url string, responseType string) MsgOption {
 	return func(config *sendConfig) error {
 		config.mode = chatResponse
 		config.endpoint = url
-		config.responseType = rt
+		config.responseType = responseType
 		config.values.Del("ts")
 		return nil
 	}
@ -625,3 +673,81 @@ func (api *Client) GetPermalinkContext(ctx context.Context, params *PermalinkPar
 	}
 	return response.Permalink, response.Err()
 }
+
+type GetScheduledMessagesParameters struct {
+	Channel string
+	Cursor  string
+	Latest  string
+	Limit   int
+	Oldest  string
+}
+
+// GetScheduledMessages returns the list of scheduled messages based on params
+func (api *Client) GetScheduledMessages(params *GetScheduledMessagesParameters) (channels []Message, nextCursor string, err error) {
+	return api.GetScheduledMessagesContext(context.Background(), params)
+}
+
+// GetScheduledMessagesContext returns the list of scheduled messages in a Slack team with a custom context
+func (api *Client) GetScheduledMessagesContext(ctx context.Context, params *GetScheduledMessagesParameters) (channels []Message, nextCursor string, err error) {
+	values := url.Values{
+		"token": {api.token},
+	}
+	if params.Channel != "" {
+		values.Add("channel", params.Channel)
+	}
+	if params.Cursor != "" {
+		values.Add("cursor", params.Cursor)
+	}
+	if params.Limit != 0 {
+		values.Add("limit", strconv.Itoa(params.Limit))
+	}
+	if params.Latest != "" {
+		values.Add("latest", params.Latest)
+	}
+	if params.Oldest != "" {
+		values.Add("oldest", params.Oldest)
+	}
+	response := struct {
+		Messages         []Message        `json:"scheduled_messages"`
+		ResponseMetaData responseMetaData `json:"response_metadata"`
+		SlackResponse
+	}{}
+
+	err = api.postMethod(ctx, "chat.scheduledMessages.list", values, &response)
+	if err != nil {
+		return nil, "", err
+	}
+
+	return response.Messages, response.ResponseMetaData.NextCursor, response.Err()
+}
+
+type DeleteScheduledMessageParameters struct {
+	Channel            string
+	ScheduledMessageID string
+	AsUser             bool
+}
+
+// DeleteScheduledMessage returns the list of scheduled messages based on params
+func (api *Client) DeleteScheduledMessage(params *DeleteScheduledMessageParameters) (bool, error) {
+	return api.DeleteScheduledMessageContext(context.Background(), params)
+}
+
+// DeleteScheduledMessageContext returns the list of scheduled messages in a Slack team with a custom context
+func (api *Client) DeleteScheduledMessageContext(ctx context.Context, params *DeleteScheduledMessageParameters) (bool, error) {
+	values := url.Values{
+		"token":                {api.token},
+		"channel":              {params.Channel},
+		"scheduled_message_id": {params.ScheduledMessageID},
+		"as_user":              {strconv.FormatBool(params.AsUser)},
+	}
+	response := struct {
+		SlackResponse
+	}{}
+
+	err := api.postMethod(ctx, "chat.deleteScheduledMessage", values, &response)
+	if err != nil {
+		return false, err
+	}
+
+	return response.Ok, response.Err()
+}
--- a/vendor/github.com/slack-go/slack/comment.go
+++ b/vendor/github.com/slack-go/slack/comment.go
--- a/vendor/github.com/slack-go/slack/conversation.go
+++ b/vendor/github.com/slack-go/slack/conversation.go
--- a/vendor/github.com/slack-go/slack/dialog.go
+++ b/vendor/github.com/slack-go/slack/dialog.go
--- a/vendor/github.com/slack-go/slack/dialog_select.go
+++ b/vendor/github.com/slack-go/slack/dialog_select.go
--- a/vendor/github.com/slack-go/slack/dialog_text.go
+++ b/vendor/github.com/slack-go/slack/dialog_text.go
--- a/vendor/github.com/slack-go/slack/dnd.go
+++ b/vendor/github.com/slack-go/slack/dnd.go
--- a/vendor/github.com/slack-go/slack/emoji.go
+++ b/vendor/github.com/slack-go/slack/emoji.go
--- a/vendor/github.com/slack-go/slack/errors.go
+++ b/vendor/github.com/slack-go/slack/errors.go
@ -1,6 +1,6 @@
 package slack

-import "github.com/nlopes/slack/internal/errorsx"
+import "github.com/slack-go/slack/internal/errorsx"

 // Errors returned by various methods.
 const (
--- a/vendor/github.com/slack-go/slack/files.go
+++ b/vendor/github.com/slack-go/slack/files.go
--- a/vendor/github.com/slack-go/slack/go.mod
+++ b/vendor/github.com/slack-go/slack/go.mod
@ -0,0 +1,11 @@
+module github.com/slack-go/slack
+
+require (
+	github.com/go-test/deep v1.0.4
+	github.com/gorilla/websocket v1.2.0
+	github.com/nlopes/slack v0.6.0
+	github.com/pkg/errors v0.8.0
+	github.com/stretchr/testify v1.2.2
+)
+
+go 1.13
--- a/vendor/github.com/slack-go/slack/go.sum
+++ b/vendor/github.com/slack-go/slack/go.sum
@ -0,0 +1,14 @@
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/go-test/deep v1.0.4 h1:u2CU3YKy9I2pmu9pX0eq50wCgjfGIt539SqR7FbHiho=
+github.com/go-test/deep v1.0.4/go.mod h1:wGDj63lr65AM2AQyKZd/NYHGb0R+1RLqB8NKt3aSFNA=
+github.com/gorilla/websocket v1.2.0 h1:VJtLvh6VQym50czpZzx07z/kw9EgAxI3x1ZB8taTMQQ=
+github.com/gorilla/websocket v1.2.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
+github.com/nlopes/slack v0.6.0 h1:jt0jxVQGhssx1Ib7naAOZEZcGdtIhTzkP0nopK0AsRA=
+github.com/nlopes/slack v0.6.0/go.mod h1:JzQ9m3PMAqcpeCam7UaHSuBuupz7CmpjehYMayT6YOk=
+github.com/pkg/errors v0.8.0 h1:WdK/asTD0HN+q6hsWO3/vpuAkAr+tw6aNJNDFFf0+qw=
+github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
--- a/vendor/github.com/slack-go/slack/groups.go
+++ b/vendor/github.com/slack-go/slack/groups.go
--- a/vendor/github.com/slack-go/slack/history.go
+++ b/vendor/github.com/slack-go/slack/history.go
--- a/vendor/github.com/slack-go/slack/im.go
+++ b/vendor/github.com/slack-go/slack/im.go
--- a/vendor/github.com/slack-go/slack/info.go
+++ b/vendor/github.com/slack-go/slack/info.go
@ -0,0 +1,468 @@
+package slack
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+)
+
+type UserPrefsCarrier struct {
+	SlackResponse
+	UserPrefs *UserPrefs `json:"prefs"`
+}
+
+// UserPrefs carries a bunch of user settings including some unknown types
+type UserPrefs struct {
+	UserColors       string `json:"user_colors,omitempty"`
+	ColorNamesInList bool   `json:"color_names_in_list,omitempty"`
+	// Keyboard UnknownType `json:"keyboard"`
+	EmailAlerts                         string `json:"email_alerts,omitempty"`
+	EmailAlertsSleepUntil               int    `json:"email_alerts_sleep_until,omitempty"`
+	EmailTips                           bool   `json:"email_tips,omitempty"`
+	EmailWeekly                         bool   `json:"email_weekly,omitempty"`
+	EmailOffers                         bool   `json:"email_offers,omitempty"`
+	EmailResearch                       bool   `json:"email_research,omitempty"`
+	EmailDeveloper                      bool   `json:"email_developer,omitempty"`
+	WelcomeMessageHidden                bool   `json:"welcome_message_hidden,omitempty"`
+	SearchSort                          string `json:"search_sort,omitempty"`
+	SearchFileSort                      string `json:"search_file_sort,omitempty"`
+	SearchChannelSort                   string `json:"search_channel_sort,omitempty"`
+	SearchPeopleSort                    string `json:"search_people_sort,omitempty"`
+	ExpandInlineImages                  bool   `json:"expand_inline_images,omitempty"`
+	ExpandInternalInlineImages          bool   `json:"expand_internal_inline_images,omitempty"`
+	ExpandSnippets                      bool   `json:"expand_snippets,omitempty"`
+	PostsFormattingGuide                bool   `json:"posts_formatting_guide,omitempty"`
+	SeenWelcome2                        bool   `json:"seen_welcome_2,omitempty"`
+	SeenSSBPrompt                       bool   `json:"seen_ssb_prompt,omitempty"`
+	SpacesNewXpBannerDismissed          bool   `json:"spaces_new_xp_banner_dismissed,omitempty"`
+	SearchOnlyMyChannels                bool   `json:"search_only_my_channels,omitempty"`
+	SearchOnlyCurrentTeam               bool   `json:"search_only_current_team,omitempty"`
+	SearchHideMyChannels                bool   `json:"search_hide_my_channels,omitempty"`
+	SearchOnlyShowOnline                bool   `json:"search_only_show_online,omitempty"`
+	SearchHideDeactivatedUsers          bool   `json:"search_hide_deactivated_users,omitempty"`
+	EmojiMode                           string `json:"emoji_mode,omitempty"`
+	EmojiUse                            string `json:"emoji_use,omitempty"`
+	HasInvited                          bool   `json:"has_invited,omitempty"`
+	HasUploaded                         bool   `json:"has_uploaded,omitempty"`
+	HasCreatedChannel                   bool   `json:"has_created_channel,omitempty"`
+	HasSearched                         bool   `json:"has_searched,omitempty"`
+	SearchExcludeChannels               string `json:"search_exclude_channels,omitempty"`
+	MessagesTheme                       string `json:"messages_theme,omitempty"`
+	WebappSpellcheck                    bool   `json:"webapp_spellcheck,omitempty"`
+	NoJoinedOverlays                    bool   `json:"no_joined_overlays,omitempty"`
+	NoCreatedOverlays                   bool   `json:"no_created_overlays,omitempty"`
+	DropboxEnabled                      bool   `json:"dropbox_enabled,omitempty"`
+	SeenDomainInviteReminder            bool   `json:"seen_domain_invite_reminder,omitempty"`
+	SeenMemberInviteReminder            bool   `json:"seen_member_invite_reminder,omitempty"`
+	MuteSounds                          bool   `json:"mute_sounds,omitempty"`
+	ArrowHistory                        bool   `json:"arrow_history,omitempty"`
+	TabUIReturnSelects                  bool   `json:"tab_ui_return_selects,omitempty"`
+	ObeyInlineImgLimit                  bool   `json:"obey_inline_img_limit,omitempty"`
+	RequireAt                           bool   `json:"require_at,omitempty"`
+	SsbSpaceWindow                      string `json:"ssb_space_window,omitempty"`
+	MacSsbBounce                        string `json:"mac_ssb_bounce,omitempty"`
+	MacSsbBullet                        bool   `json:"mac_ssb_bullet,omitempty"`
+	ExpandNonMediaAttachments           bool   `json:"expand_non_media_attachments,omitempty"`
+	ShowTyping                          bool   `json:"show_typing,omitempty"`
+	PagekeysHandled                     bool   `json:"pagekeys_handled,omitempty"`
+	LastSnippetType                     string `json:"last_snippet_type,omitempty"`
+	DisplayRealNamesOverride            int    `json:"display_real_names_override,omitempty"`
+	DisplayDisplayNames                 bool   `json:"display_display_names,omitempty"`
+	Time24                              bool   `json:"time24,omitempty"`
+	EnterIsSpecialInTbt                 bool   `json:"enter_is_special_in_tbt,omitempty"`
+	MsgInputSendBtn                     bool   `json:"msg_input_send_btn,omitempty"`
+	MsgInputSendBtnAutoSet              bool   `json:"msg_input_send_btn_auto_set,omitempty"`
+	MsgInputStickyComposer              bool   `json:"msg_input_sticky_composer,omitempty"`
+	GraphicEmoticons                    bool   `json:"graphic_emoticons,omitempty"`
+	ConvertEmoticons                    bool   `json:"convert_emoticons,omitempty"`
+	SsEmojis                            bool   `json:"ss_emojis,omitempty"`
+	SeenOnboardingStart                 bool   `json:"seen_onboarding_start,omitempty"`
+	OnboardingCancelled                 bool   `json:"onboarding_cancelled,omitempty"`
+	SeenOnboardingSlackbotConversation  bool   `json:"seen_onboarding_slackbot_conversation,omitempty"`
+	SeenOnboardingChannels              bool   `json:"seen_onboarding_channels,omitempty"`
+	SeenOnboardingDirectMessages        bool   `json:"seen_onboarding_direct_messages,omitempty"`
+	SeenOnboardingInvites               bool   `json:"seen_onboarding_invites,omitempty"`
+	SeenOnboardingSearch                bool   `json:"seen_onboarding_search,omitempty"`
+	SeenOnboardingRecentMentions        bool   `json:"seen_onboarding_recent_mentions,omitempty"`
+	SeenOnboardingStarredItems          bool   `json:"seen_onboarding_starred_items,omitempty"`
+	SeenOnboardingPrivateGroups         bool   `json:"seen_onboarding_private_groups,omitempty"`
+	SeenOnboardingBanner                bool   `json:"seen_onboarding_banner,omitempty"`
+	OnboardingSlackbotConversationStep  int    `json:"onboarding_slackbot_conversation_step,omitempty"`
+	SetTzAutomatically                  bool   `json:"set_tz_automatically,omitempty"`
+	SuppressLinkWarning                 bool   `json:"suppress_link_warning,omitempty"`
+	DndEnabled                          bool   `json:"dnd_enabled,omitempty"`
+	DndStartHour                        string `json:"dnd_start_hour,omitempty"`
+	DndEndHour                          string `json:"dnd_end_hour,omitempty"`
+	DndBeforeMonday                     string `json:"dnd_before_monday,omitempty"`
+	DndAfterMonday                      string `json:"dnd_after_monday,omitempty"`
+	DndEnabledMonday                    string `json:"dnd_enabled_monday,omitempty"`
+	DndBeforeTuesday                    string `json:"dnd_before_tuesday,omitempty"`
+	DndAfterTuesday                     string `json:"dnd_after_tuesday,omitempty"`
+	DndEnabledTuesday                   string `json:"dnd_enabled_tuesday,omitempty"`
+	DndBeforeWednesday                  string `json:"dnd_before_wednesday,omitempty"`
+	DndAfterWednesday                   string `json:"dnd_after_wednesday,omitempty"`
+	DndEnabledWednesday                 string `json:"dnd_enabled_wednesday,omitempty"`
+	DndBeforeThursday                   string `json:"dnd_before_thursday,omitempty"`
+	DndAfterThursday                    string `json:"dnd_after_thursday,omitempty"`
+	DndEnabledThursday                  string `json:"dnd_enabled_thursday,omitempty"`
+	DndBeforeFriday                     string `json:"dnd_before_friday,omitempty"`
+	DndAfterFriday                      string `json:"dnd_after_friday,omitempty"`
+	DndEnabledFriday                    string `json:"dnd_enabled_friday,omitempty"`
+	DndBeforeSaturday                   string `json:"dnd_before_saturday,omitempty"`
+	DndAfterSaturday                    string `json:"dnd_after_saturday,omitempty"`
+	DndEnabledSaturday                  string `json:"dnd_enabled_saturday,omitempty"`
+	DndBeforeSunday                     string `json:"dnd_before_sunday,omitempty"`
+	DndAfterSunday                      string `json:"dnd_after_sunday,omitempty"`
+	DndEnabledSunday                    string `json:"dnd_enabled_sunday,omitempty"`
+	DndDays                             string `json:"dnd_days,omitempty"`
+	DndCustomNewBadgeSeen               bool   `json:"dnd_custom_new_badge_seen,omitempty"`
+	DndNotificationScheduleNewBadgeSeen bool   `json:"dnd_notification_schedule_new_badge_seen,omitempty"`
+	// UnreadCollapsedChannels      unknownType                  `json:"unread_collapsed_channels,omitempty"`
+	SidebarBehavior          string `json:"sidebar_behavior,omitempty"`
+	ChannelSort              string `json:"channel_sort,omitempty"`
+	SeparatePrivateChannels  bool   `json:"separate_private_channels,omitempty"`
+	SeparateSharedChannels   bool   `json:"separate_shared_channels,omitempty"`
+	SidebarTheme             string `json:"sidebar_theme,omitempty"`
+	SidebarThemeCustomValues string `json:"sidebar_theme_custom_values,omitempty"`
+	NoInvitesWidgetInSidebar bool   `json:"no_invites_widget_in_sidebar,omitempty"`
+	NoOmniboxInChannels      bool   `json:"no_omnibox_in_channels,omitempty"`
+
+	KKeyOmniboxAutoHideCount       int    `json:"k_key_omnibox_auto_hide_count,omitempty"`
+	ShowSidebarQuickswitcherButton bool   `json:"show_sidebar_quickswitcher_button,omitempty"`
+	EntOrgWideChannelsSidebar      bool   `json:"ent_org_wide_channels_sidebar,omitempty"`
+	MarkMsgsReadImmediately        bool   `json:"mark_msgs_read_immediately,omitempty"`
+	StartScrollAtOldest            bool   `json:"start_scroll_at_oldest,omitempty"`
+	SnippetEditorWrapLongLines     bool   `json:"snippet_editor_wrap_long_lines,omitempty"`
+	LsDisabled                     bool   `json:"ls_disabled,omitempty"`
+	FKeySearch                     bool   `json:"f_key_search,omitempty"`
+	KKeyOmnibox                    bool   `json:"k_key_omnibox,omitempty"`
+	PromptedForEmailDisabling      bool   `json:"prompted_for_email_disabling,omitempty"`
+	NoMacelectronBanner            bool   `json:"no_macelectron_banner,omitempty"`
+	NoMacssb1Banner                bool   `json:"no_macssb1_banner,omitempty"`
+	NoMacssb2Banner                bool   `json:"no_macssb2_banner,omitempty"`
+	NoWinssb1Banner                bool   `json:"no_winssb1_banner,omitempty"`
+	HideUserGroupInfoPane          bool   `json:"hide_user_group_info_pane,omitempty"`
+	MentionsExcludeAtUserGroups    bool   `json:"mentions_exclude_at_user_groups,omitempty"`
+	MentionsExcludeReactions       bool   `json:"mentions_exclude_reactions,omitempty"`
+	PrivacyPolicySeen              bool   `json:"privacy_policy_seen,omitempty"`
+	EnterpriseMigrationSeen        bool   `json:"enterprise_migration_seen,omitempty"`
+	LastTosAcknowledged            string `json:"last_tos_acknowledged,omitempty"`
+	SearchExcludeBots              bool   `json:"search_exclude_bots,omitempty"`
+	LoadLato2                      bool   `json:"load_lato_2,omitempty"`
+	FullerTimestamps               bool   `json:"fuller_timestamps,omitempty"`
+	LastSeenAtChannelWarning       int    `json:"last_seen_at_channel_warning,omitempty"`
+	EmojiAutocompleteBig           bool   `json:"emoji_autocomplete_big,omitempty"`
+	TwoFactorAuthEnabled           bool   `json:"two_factor_auth_enabled,omitempty"`
+	// TwoFactorType                         unknownType    `json:"two_factor_type,omitempty"`
+	// TwoFactorBackupType                   unknownType    `json:"two_factor_backup_type,omitempty"`
+	HideHexSwatch          bool   `json:"hide_hex_swatch,omitempty"`
+	ShowJumperScores       bool   `json:"show_jumper_scores,omitempty"`
+	EnterpriseMdmCustomMsg string `json:"enterprise_mdm_custom_msg,omitempty"`
+	// EnterpriseExcludedAppTeams                 unknownType    `json:"enterprise_excluded_app_teams,omitempty"`
+	ClientLogsPri             string `json:"client_logs_pri,omitempty"`
+	FlannelServerPool         string `json:"flannel_server_pool,omitempty"`
+	MentionsExcludeAtChannels bool   `json:"mentions_exclude_at_channels,omitempty"`
+	ConfirmClearAllUnreads    bool   `json:"confirm_clear_all_unreads,omitempty"`
+	ConfirmUserMarkedAway     bool   `json:"confirm_user_marked_away,omitempty"`
+	BoxEnabled                bool   `json:"box_enabled,omitempty"`
+	SeenSingleEmojiMsg        bool   `json:"seen_single_emoji_msg,omitempty"`
+	ConfirmShCallStart        bool   `json:"confirm_sh_call_start,omitempty"`
+	PreferredSkinTone         string `json:"preferred_skin_tone,omitempty"`
+	ShowAllSkinTones          bool   `json:"show_all_skin_tones,omitempty"`
+	WhatsNewRead              int    `json:"whats_new_read,omitempty"`
+	// FrecencyJumper                           unknownType      `json:"frecency_jumper,omitempty"`
+	FrecencyEntJumper                       string `json:"frecency_ent_jumper,omitempty"`
+	FrecencyEntJumperBackup                 string `json:"frecency_ent_jumper_backup,omitempty"`
+	Jumbomoji                               bool   `json:"jumbomoji,omitempty"`
+	NewxpSeenLastMessage                    int    `json:"newxp_seen_last_message,omitempty"`
+	ShowMemoryInstrument                    bool   `json:"show_memory_instrument,omitempty"`
+	EnableUnreadView                        bool   `json:"enable_unread_view,omitempty"`
+	SeenUnreadViewCoachmark                 bool   `json:"seen_unread_view_coachmark,omitempty"`
+	EnableReactEmojiPicker                  bool   `json:"enable_react_emoji_picker,omitempty"`
+	SeenCustomStatusBadge                   bool   `json:"seen_custom_status_badge,omitempty"`
+	SeenCustomStatusCallout                 bool   `json:"seen_custom_status_callout,omitempty"`
+	SeenCustomStatusExpirationBadge         bool   `json:"seen_custom_status_expiration_badge,omitempty"`
+	UsedCustomStatusKbShortcut              bool   `json:"used_custom_status_kb_shortcut,omitempty"`
+	SeenGuestAdminSlackbotAnnouncement      bool   `json:"seen_guest_admin_slackbot_announcement,omitempty"`
+	SeenThreadsNotificationBanner           bool   `json:"seen_threads_notification_banner,omitempty"`
+	SeenNameTaggingCoachmark                bool   `json:"seen_name_tagging_coachmark,omitempty"`
+	AllUnreadsSortOrder                     string `json:"all_unreads_sort_order,omitempty"`
+	Locale                                  string `json:"locale,omitempty"`
+	SeenIntlChannelNamesCoachmark           bool   `json:"seen_intl_channel_names_coachmark,omitempty"`
+	SeenP2LocaleChangeMessage               int    `json:"seen_p2_locale_change_message,omitempty"`
+	SeenLocaleChangeMessage                 int    `json:"seen_locale_change_message,omitempty"`
+	SeenJapaneseLocaleChangeMessage         bool   `json:"seen_japanese_locale_change_message,omitempty"`
+	SeenSharedChannelsCoachmark             bool   `json:"seen_shared_channels_coachmark,omitempty"`
+	SeenSharedChannelsOptInChangeMessage    bool   `json:"seen_shared_channels_opt_in_change_message,omitempty"`
+	HasRecentlySharedaChannel               bool   `json:"has_recently_shared_a_channel,omitempty"`
+	SeenChannelBrowserAdminCoachmark        bool   `json:"seen_channel_browser_admin_coachmark,omitempty"`
+	SeenAdministrationMenu                  bool   `json:"seen_administration_menu,omitempty"`
+	SeenDraftsSectionCoachmark              bool   `json:"seen_drafts_section_coachmark,omitempty"`
+	SeenEmojiUpdateOverlayCoachmark         bool   `json:"seen_emoji_update_overlay_coachmark,omitempty"`
+	SeenSonicDeluxeToast                    int    `json:"seen_sonic_deluxe_toast,omitempty"`
+	SeenWysiwygDeluxeToast                  bool   `json:"seen_wysiwyg_deluxe_toast,omitempty"`
+	SeenMarkdownPasteToast                  int    `json:"seen_markdown_paste_toast,omitempty"`
+	SeenMarkdownPasteShortcut               int    `json:"seen_markdown_paste_shortcut,omitempty"`
+	SeenIaEducation                         bool   `json:"seen_ia_education,omitempty"`
+	PlainTextMode                           bool   `json:"plain_text_mode,omitempty"`
+	ShowSharedChannelsEducationBanner       bool   `json:"show_shared_channels_education_banner,omitempty"`
+	AllowCallsToSetCurrentStatus            bool   `json:"allow_calls_to_set_current_status,omitempty"`
+	InInteractiveMasMigrationFlow           bool   `json:"in_interactive_mas_migration_flow,omitempty"`
+	SunsetInteractiveMessageViews           int    `json:"sunset_interactive_message_views,omitempty"`
+	ShdepPromoCodeSubmitted                 bool   `json:"shdep_promo_code_submitted,omitempty"`
+	SeenShdepSlackbotMessage                bool   `json:"seen_shdep_slackbot_message,omitempty"`
+	SeenCallsInteractiveCoachmark           bool   `json:"seen_calls_interactive_coachmark,omitempty"`
+	AllowCmdTabIss                          bool   `json:"allow_cmd_tab_iss,omitempty"`
+	SeenWorkflowBuilderDeluxeToast          bool   `json:"seen_workflow_builder_deluxe_toast,omitempty"`
+	WorkflowBuilderIntroModalClickedThrough bool   `json:"workflow_builder_intro_modal_clicked_through,omitempty"`
+	// WorkflowBuilderCoachmarks                    unknownType  `json:"workflow_builder_coachmarks,omitempty"`
+	SeenGdriveCoachmark                            bool   `json:"seen_gdrive_coachmark,omitempty"`
+	OverloadedMessageEnabled                       bool   `json:"overloaded_message_enabled,omitempty"`
+	SeenHighlightsCoachmark                        bool   `json:"seen_highlights_coachmark,omitempty"`
+	SeenHighlightsArrowsCoachmark                  bool   `json:"seen_highlights_arrows_coachmark,omitempty"`
+	SeenHighlightsWarmWelcome                      bool   `json:"seen_highlights_warm_welcome,omitempty"`
+	SeenNewSearchUi                                bool   `json:"seen_new_search_ui,omitempty"`
+	SeenChannelSearch                              bool   `json:"seen_channel_search,omitempty"`
+	SeenPeopleSearch                               bool   `json:"seen_people_search,omitempty"`
+	SeenPeopleSearchCount                          int    `json:"seen_people_search_count,omitempty"`
+	DismissedScrollSearchTooltipCount              int    `json:"dismissed_scroll_search_tooltip_count,omitempty"`
+	LastDismissedScrollSearchTooltipTimestamp      int    `json:"last_dismissed_scroll_search_tooltip_timestamp,omitempty"`
+	HasUsedQuickswitcherShortcut                   bool   `json:"has_used_quickswitcher_shortcut,omitempty"`
+	SeenQuickswitcherShortcutTipCount              int    `json:"seen_quickswitcher_shortcut_tip_count,omitempty"`
+	BrowsersDismissedChannelsLowResultsEducation   bool   `json:"browsers_dismissed_channels_low_results_education,omitempty"`
+	BrowsersSeenInitialChannelsEducation           bool   `json:"browsers_seen_initial_channels_education,omitempty"`
+	BrowsersDismissedPeopleLowResultsEducation     bool   `json:"browsers_dismissed_people_low_results_education,omitempty"`
+	BrowsersSeenInitialPeopleEducation             bool   `json:"browsers_seen_initial_people_education,omitempty"`
+	BrowsersDismissedUserGroupsLowResultsEducation bool   `json:"browsers_dismissed_user_groups_low_results_education,omitempty"`
+	BrowsersSeenInitialUserGroupsEducation         bool   `json:"browsers_seen_initial_user_groups_education,omitempty"`
+	BrowsersDismissedFilesLowResultsEducation      bool   `json:"browsers_dismissed_files_low_results_education,omitempty"`
+	BrowsersSeenInitialFilesEducation              bool   `json:"browsers_seen_initial_files_education,omitempty"`
+	A11yAnimations                                 bool   `json:"a11y_animations,omitempty"`
+	SeenKeyboardShortcutsCoachmark                 bool   `json:"seen_keyboard_shortcuts_coachmark,omitempty"`
+	NeedsInitialPasswordSet                        bool   `json:"needs_initial_password_set,omitempty"`
+	LessonsEnabled                                 bool   `json:"lessons_enabled,omitempty"`
+	TractorEnabled                                 bool   `json:"tractor_enabled,omitempty"`
+	TractorExperimentGroup                         string `json:"tractor_experiment_group,omitempty"`
+	OpenedSlackbotDm                               bool   `json:"opened_slackbot_dm,omitempty"`
+	NewxpSuggestedChannels                         string `json:"newxp_suggested_channels,omitempty"`
+	OnboardingComplete                             bool   `json:"onboarding_complete,omitempty"`
+	WelcomePlaceState                              string `json:"welcome_place_state,omitempty"`
+	// OnboardingRoleApps  unknownType `json:"onboarding_role_apps,omitempty"`
+	HasReceivedThreadedMessage        bool   `json:"has_received_threaded_message,omitempty"`
+	SendYourFirstMessageBannerEnabled bool   `json:"send_your_first_message_banner_enabled,omitempty"`
+	WhocanseethisDmMpdmBadge          bool   `json:"whocanseethis_dm_mpdm_badge,omitempty"`
+	HighlightWords                    string `json:"highlight_words,omitempty"`
+	ThreadsEverything                 bool   `json:"threads_everything,omitempty"`
+	NoTextInNotifications             bool   `json:"no_text_in_notifications,omitempty"`
+	PushShowPreview                   bool   `json:"push_show_preview,omitempty"`
+	GrowlsEnabled                     bool   `json:"growls_enabled,omitempty"`
+	AllChannelsLoud                   bool   `json:"all_channels_loud,omitempty"`
+	PushDmAlert                       bool   `json:"push_dm_alert,omitempty"`
+	PushMentionAlert                  bool   `json:"push_mention_alert,omitempty"`
+	PushEverything                    bool   `json:"push_everything,omitempty"`
+	PushIdleWait                      int    `json:"push_idle_wait,omitempty"`
+	PushSound                         string `json:"push_sound,omitempty"`
+	NewMsgSnd                         string `json:"new_msg_snd,omitempty"`
+	PushLoudChannels                  string `json:"push_loud_channels,omitempty"`
+	PushMentionChannels               string `json:"push_mention_channels,omitempty"`
+	PushLoudChannelsSet               string `json:"push_loud_channels_set,omitempty"`
+	LoudChannels                      string `json:"loud_channels,omitempty"`
+	NeverChannels                     string `json:"never_channels,omitempty"`
+	LoudChannelsSet                   string `json:"loud_channels_set,omitempty"`
+	AtChannelSuppressedChannels       string `json:"at_channel_suppressed_channels,omitempty"`
+	PushAtChannelSuppressedChannels   string `json:"push_at_channel_suppressed_channels,omitempty"`
+	MutedChannels                     string `json:"muted_channels,omitempty"`
+	// AllNotificationsPrefs                  unknownType `json:"all_notifications_prefs,omitempty"`
+	GrowthMsgLimitApproachingCtaCount     int `json:"growth_msg_limit_approaching_cta_count,omitempty"`
+	GrowthMsgLimitApproachingCtaTs        int `json:"growth_msg_limit_approaching_cta_ts,omitempty"`
+	GrowthMsgLimitReachedCtaCount         int `json:"growth_msg_limit_reached_cta_count,omitempty"`
+	GrowthMsgLimitReachedCtaLastTs        int `json:"growth_msg_limit_reached_cta_last_ts,omitempty"`
+	GrowthMsgLimitLongReachedCtaCount     int `json:"growth_msg_limit_long_reached_cta_count,omitempty"`
+	GrowthMsgLimitLongReachedCtaLastTs    int `json:"growth_msg_limit_long_reached_cta_last_ts,omitempty"`
+	GrowthMsgLimitSixtyDayBannerCtaCount  int `json:"growth_msg_limit_sixty_day_banner_cta_count,omitempty"`
+	GrowthMsgLimitSixtyDayBannerCtaLastTs int `json:"growth_msg_limit_sixty_day_banner_cta_last_ts,omitempty"`
+	// GrowthAllBannersPrefs unknownType `json:"growth_all_banners_prefs,omitempty"`
+	AnalyticsUpsellCoachmarkSeen bool `json:"analytics_upsell_coachmark_seen,omitempty"`
+	SeenAppSpaceCoachmark        bool `json:"seen_app_space_coachmark,omitempty"`
+	SeenAppSpaceTutorial         bool `json:"seen_app_space_tutorial,omitempty"`
+	DismissedAppLauncherWelcome  bool `json:"dismissed_app_launcher_welcome,omitempty"`
+	DismissedAppLauncherLimit    bool `json:"dismissed_app_launcher_limit,omitempty"`
+	Purchaser                    bool `json:"purchaser,omitempty"`
+	ShowEntOnboarding            bool `json:"show_ent_onboarding,omitempty"`
+	FoldersEnabled               bool `json:"folders_enabled,omitempty"`
+	// FolderData unknownType `json:"folder_data,omitempty"`
+	SeenCorporateExportAlert               bool   `json:"seen_corporate_export_alert,omitempty"`
+	ShowAutocompleteHelp                   int    `json:"show_autocomplete_help,omitempty"`
+	DeprecationToastLastSeen               int    `json:"deprecation_toast_last_seen,omitempty"`
+	DeprecationModalLastSeen               int    `json:"deprecation_modal_last_seen,omitempty"`
+	Iap1Lab                                int    `json:"iap1_lab,omitempty"`
+	IaTopNavTheme                          string `json:"ia_top_nav_theme,omitempty"`
+	IaPlatformActionsLab                   int    `json:"ia_platform_actions_lab,omitempty"`
+	ActivityView                           string `json:"activity_view,omitempty"`
+	FailoverProxyCheckCompleted            int    `json:"failover_proxy_check_completed,omitempty"`
+	EdgeUploadProxyCheckCompleted          int    `json:"edge_upload_proxy_check_completed,omitempty"`
+	AppSubdomainCheckCompleted             int    `json:"app_subdomain_check_completed,omitempty"`
+	AddAppsPromptDismissed                 bool   `json:"add_apps_prompt_dismissed,omitempty"`
+	AddChannelPromptDismissed              bool   `json:"add_channel_prompt_dismissed,omitempty"`
+	ChannelSidebarHideInvite               bool   `json:"channel_sidebar_hide_invite,omitempty"`
+	InProdSurveysEnabled                   bool   `json:"in_prod_surveys_enabled,omitempty"`
+	DismissedInstalledAppDmSuggestions     string `json:"dismissed_installed_app_dm_suggestions,omitempty"`
+	SeenContextualMessageShortcutsModal    bool   `json:"seen_contextual_message_shortcuts_modal,omitempty"`
+	SeenMessageNavigationEducationalToast  bool   `json:"seen_message_navigation_educational_toast,omitempty"`
+	ContextualMessageShortcutsModalWasSeen bool   `json:"contextual_message_shortcuts_modal_was_seen,omitempty"`
+	MessageNavigationToastWasSeen          bool   `json:"message_navigation_toast_was_seen,omitempty"`
+	UpToBrowseKbShortcut                   bool   `json:"up_to_browse_kb_shortcut,omitempty"`
+	ChannelSections                        string `json:"channel_sections,omitempty"`
+	TZ                                     string `json:"tz,omitempty"`
+}
+
+func (api *Client) GetUserPrefs() (*UserPrefsCarrier, error) {
+	values := url.Values{"token": {api.token}}
+	response := UserPrefsCarrier{}
+
+	err := api.getMethod(context.Background(), "users.prefs.get", values, &response)
+	if err != nil {
+		return nil, err
+	}
+
+	return &response, response.Err()
+}
+
+func (api *Client) MuteChat(channelID string) (*UserPrefsCarrier, error) {
+	prefs, err := api.GetUserPrefs()
+	if err != nil {
+		return nil, err
+	}
+	chnls := strings.Split(prefs.UserPrefs.MutedChannels, ",")
+	for _, chn := range chnls {
+		if chn == channelID {
+			return nil, nil // noop
+		}
+	}
+	newChnls := prefs.UserPrefs.MutedChannels + "," + channelID
+	values := url.Values{"token": {api.token}, "muted_channels": {newChnls}, "reason": {"update-muted-channels"}}
+	response := UserPrefsCarrier{}
+
+	err = api.postMethod(context.Background(), "users.prefs.set", values, &response)
+	if err != nil {
+		return nil, err
+	}
+
+	return &response, response.Err()
+}
+
+func (api *Client) UnMuteChat(channelID string) (*UserPrefsCarrier, error) {
+	prefs, err := api.GetUserPrefs()
+	if err != nil {
+		return nil, err
+	}
+	chnls := strings.Split(prefs.UserPrefs.MutedChannels, ",")
+	newChnls := make([]string, len(chnls)-1)
+	for i, chn := range chnls {
+		if chn == channelID {
+			return nil, nil // noop
+		}
+		newChnls[i] = chn
+	}
+	values := url.Values{"token": {api.token}, "muted_channels": {strings.Join(newChnls, ",")}, "reason": {"update-muted-channels"}}
+	response := UserPrefsCarrier{}
+
+	err = api.postMethod(context.Background(), "users.prefs.set", values, &response)
+	if err != nil {
+		return nil, err
+	}
+
+	return &response, response.Err()
+}
+
+// UserDetails contains user details coming in the initial response from StartRTM
+type UserDetails struct {
+	ID             string    `json:"id"`
+	Name           string    `json:"name"`
+	Created        JSONTime  `json:"created"`
+	ManualPresence string    `json:"manual_presence"`
+	Prefs          UserPrefs `json:"prefs"`
+}
+
+// JSONTime exists so that we can have a String method converting the date
+type JSONTime int64
+
+// String converts the unix timestamp into a string
+func (t JSONTime) String() string {
+	tm := t.Time()
+	return fmt.Sprintf("\"%s\"", tm.Format("Mon Jan _2"))
+}
+
+// Time returns a `time.Time` representation of this value.
+func (t JSONTime) Time() time.Time {
+	return time.Unix(int64(t), 0)
+}
+
+// UnmarshalJSON will unmarshal both string and int JSON values
+func (t *JSONTime) UnmarshalJSON(buf []byte) error {
+	s := bytes.Trim(buf, `"`)
+
+	v, err := strconv.Atoi(string(s))
+	if err != nil {
+		return err
+	}
+
+	*t = JSONTime(int64(v))
+	return nil
+}
+
+// Team contains details about a team
+type Team struct {
+	ID     string `json:"id"`
+	Name   string `json:"name"`
+	Domain string `json:"domain"`
+}
+
+// Icons XXX: needs further investigation
+type Icons struct {
+	Image36 string `json:"image_36,omitempty"`
+	Image48 string `json:"image_48,omitempty"`
+	Image72 string `json:"image_72,omitempty"`
+}
+
+// Info contains various details about the authenticated user and team.
+// It is returned by StartRTM or included in the "ConnectedEvent" RTM event.
+type Info struct {
+	URL  string       `json:"url,omitempty"`
+	User *UserDetails `json:"self,omitempty"`
+	Team *Team        `json:"team,omitempty"`
+}
+
+type infoResponseFull struct {
+	Info
+	SlackResponse
+}
+
+// GetBotByID is deprecated and returns nil
+func (info Info) GetBotByID(botID string) *Bot {
+	return nil
+}
+
+// GetUserByID is deprecated and returns nil
+func (info Info) GetUserByID(userID string) *User {
+	return nil
+}
+
+// GetChannelByID is deprecated and returns nil
+func (info Info) GetChannelByID(channelID string) *Channel {
+	return nil
+}
+
+// GetGroupByID is deprecated and returns nil
+func (info Info) GetGroupByID(groupID string) *Group {
+	return nil
+}
+
+// GetIMByID is deprecated and returns nil
+func (info Info) GetIMByID(imID string) *IM {
+	return nil
+}
--- a/vendor/github.com/slack-go/slack/interactions.go
+++ b/vendor/github.com/slack-go/slack/interactions.go
@ -24,6 +24,9 @@ const (
 	InteractionTypeInteractionMessage = InteractionType("interactive_message")
 	InteractionTypeMessageAction      = InteractionType("message_action")
 	InteractionTypeBlockActions       = InteractionType("block_actions")
+	InteractionTypeBlockSuggestion    = InteractionType("block_suggestion")
+	InteractionTypeViewSubmission     = InteractionType("view_submission")
+	InteractionTypeViewClosed         = InteractionType("view_closed")
 )

 // InteractionCallback is sent from slack when a user interactions with a button or dialog.
@ -44,7 +47,19 @@ type InteractionCallback struct {
 	MessageTs       string          `json:"message_ts"`
 	AttachmentID    string          `json:"attachment_id"`
 	ActionCallback  ActionCallbacks `json:"actions"`
+	View            View            `json:"view"`
+	ActionID        string          `json:"action_id"`
+	APIAppID        string          `json:"api_app_id"`
+	BlockID         string          `json:"block_id"`
+	Container       Container       `json:"container"`
 	DialogSubmissionCallback
+	ViewSubmissionCallback
+	ViewClosedCallback
+}
+
+type Container struct {
+	Type   string `json:"type"`
+	ViewID string `json:"view_id"`
 }

 // ActionCallback is a convenience struct defined to allow dynamic unmarshalling of
--- a/vendor/github.com/slack-go/slack/internal/errorsx/errorsx.go
+++ b/vendor/github.com/slack-go/slack/internal/errorsx/errorsx.go
--- a/vendor/github.com/slack-go/slack/internal/timex/timex.go
+++ b/vendor/github.com/slack-go/slack/internal/timex/timex.go
--- a/vendor/github.com/slack-go/slack/item.go
+++ b/vendor/github.com/slack-go/slack/item.go
--- a/vendor/github.com/slack-go/slack/logger.go
+++ b/vendor/github.com/slack-go/slack/logger.go
--- a/vendor/github.com/slack-go/slack/messageID.go
+++ b/vendor/github.com/slack-go/slack/messageID.go
--- a/vendor/github.com/slack-go/slack/messages.go
+++ b/vendor/github.com/slack-go/slack/messages.go
@ -15,13 +15,14 @@ type OutgoingMessage struct {
 // Message is an auxiliary type to allow us to have a message containing sub messages
 type Message struct {
 	Msg
-	SubMessage *Msg `json:"message,omitempty"`
+	SubMessage      *Msg `json:"message,omitempty"`
 	PreviousMessage *Msg `json:"previous_message,omitempty"`
 }

 // Msg contains information about a slack message
 type Msg struct {
 	// Basic Message
+	ClientMsgID     string       `json:"client_msg_id"`
 	Type            string       `json:"type,omitempty"`
 	Channel         string       `json:"channel,omitempty"`
 	User            string       `json:"user,omitempty"`
--- a/vendor/github.com/slack-go/slack/misc.go
+++ b/vendor/github.com/slack-go/slack/misc.go
--- a/vendor/github.com/slack-go/slack/oauth.go
+++ b/vendor/github.com/slack-go/slack/oauth.go
@ -31,6 +31,40 @@ type OAuthResponse struct {
 	SlackResponse
 }

+// OAuthV2Response ...
+type OAuthV2Response struct {
+	AccessToken string                    `json:"access_token"`
+	TokenType   string                    `json:"token_type"`
+	Scope       string                    `json:"scope"`
+	BotUserID   string                    `json:"bot_user_id"`
+	AppID       string                    `json:"app_id"`
+	TeamID      string                    `json:"team_id"`
+	Team        OAuthV2ResponseTeam       `json:"team"`
+	Enterprise  OAuthV2ResponseEnterprise `json:"enterprise"`
+	AuthedUser  OAuthV2ResponseAuthedUser `json:"authed_user"`
+	SlackResponse
+}
+
+// OAuthV2ResponseTeam ...
+type OAuthV2ResponseTeam struct {
+	ID   string `json:"id"`
+	Name string `json:"name"`
+}
+
+// OAuthV2ResponseEnterprise ...
+type OAuthV2ResponseEnterprise struct {
+	ID   string `json:"id"`
+	Name string `json:"name"`
+}
+
+// OAuthV2ResponseAuthedUser ...
+type OAuthV2ResponseAuthedUser struct {
+	ID          string `json:"id"`
+	Scope       string `json:"scope"`
+	AccessToken string `json:"access_token"`
+	TokenType   string `json:"token_type"`
+}
+
 // GetOAuthToken retrieves an AccessToken
 func GetOAuthToken(client httpClient, clientID, clientSecret, code, redirectURI string) (accessToken string, scope string, err error) {
 	return GetOAuthTokenContext(context.Background(), client, clientID, clientSecret, code, redirectURI)
@ -62,3 +96,23 @@ func GetOAuthResponseContext(ctx context.Context, client httpClient, clientID, c
 	}
 	return response, response.Err()
 }
+
+// GetOAuthV2Response gets a V2 OAuth access token response - https://api.slack.com/methods/oauth.v2.access
+func GetOAuthV2Response(client httpClient, clientID, clientSecret, code, redirectURI string) (resp *OAuthV2Response, err error) {
+	return GetOAuthV2ResponseContext(context.Background(), client, clientID, clientSecret, code, redirectURI)
+}
+
+// GetOAuthV2ResponseContext with a context, gets a V2 OAuth access token response
+func GetOAuthV2ResponseContext(ctx context.Context, client httpClient, clientID, clientSecret, code, redirectURI string) (resp *OAuthV2Response, err error) {
+	values := url.Values{
+		"client_id":     {clientID},
+		"client_secret": {clientSecret},
+		"code":          {code},
+		"redirect_uri":  {redirectURI},
+	}
+	response := &OAuthV2Response{}
+	if err = postForm(ctx, client, APIURL+"oauth.v2.access", values, response, discard{}); err != nil {
+		return nil, err
+	}
+	return response, response.Err()
+}
--- a/vendor/github.com/slack-go/slack/pagination.go
+++ b/vendor/github.com/slack-go/slack/pagination.go
--- a/vendor/github.com/slack-go/slack/pins.go
+++ b/vendor/github.com/slack-go/slack/pins.go
--- a/vendor/github.com/slack-go/slack/reactions.go
+++ b/vendor/github.com/slack-go/slack/reactions.go
--- a/vendor/github.com/slack-go/slack/reminders.go
+++ b/vendor/github.com/slack-go/slack/reminders.go
--- a/vendor/github.com/slack-go/slack/rtm.go
+++ b/vendor/github.com/slack-go/slack/rtm.go
--- a/vendor/github.com/slack-go/slack/search.go
+++ b/vendor/github.com/slack-go/slack/search.go
--- a/vendor/github.com/slack-go/slack/security.go
+++ b/vendor/github.com/slack-go/slack/security.go
--- a/vendor/github.com/slack-go/slack/slack.go
+++ b/vendor/github.com/slack-go/slack/slack.go
@ -96,7 +96,7 @@ func New(token string, options ...Option) *Client {
 		token:      token,
 		endpoint:   APIURL,
 		httpclient: &http.Client{},
-		log:        log.New(os.Stderr, "nlopes/slack", log.LstdFlags|log.Lshortfile),
+		log:        log.New(os.Stderr, "slack-go/slack", log.LstdFlags|log.Lshortfile),
 	}

 	for _, opt := range options {
--- a/vendor/github.com/slack-go/slack/slackutilsx/slackutilsx.go
+++ b/vendor/github.com/slack-go/slack/slackutilsx/slackutilsx.go
--- a/vendor/github.com/slack-go/slack/slash.go
+++ b/vendor/github.com/slack-go/slack/slash.go
--- a/vendor/github.com/slack-go/slack/stars.go
+++ b/vendor/github.com/slack-go/slack/stars.go
--- a/vendor/github.com/slack-go/slack/team.go
+++ b/vendor/github.com/slack-go/slack/team.go
--- a/vendor/github.com/slack-go/slack/usergroups.go
+++ b/vendor/github.com/slack-go/slack/usergroups.go
@ -206,7 +206,7 @@ func (api *Client) UpdateUserGroupContext(ctx context.Context, userGroup UserGro
 	if userGroup.Description != "" {
 		values["description"] = []string{userGroup.Description}
 	}
-	
+
 	if len(userGroup.Prefs.Channels) > 0 {
 		values["channels"] = []string{strings.Join(userGroup.Prefs.Channels, ",")}
 	}
--- a/vendor/github.com/slack-go/slack/users.go
+++ b/vendor/github.com/slack-go/slack/users.go
@ -44,14 +44,14 @@ type UserProfile struct {
 // UserProfileCustomFields represents user profile's custom fields.
 // Slack API's response data type is inconsistent so we use the struct.
 // For detail, please see below.
-// https://github.com/nlopes/slack/pull/298#discussion_r185159233
+// https://github.com/slack-go/slack/pull/298#discussion_r185159233
 type UserProfileCustomFields struct {
 	fields map[string]UserProfileCustomField
 }

 // UnmarshalJSON is the implementation of the json.Unmarshaler interface.
 func (fields *UserProfileCustomFields) UnmarshalJSON(b []byte) error {
-	// https://github.com/nlopes/slack/pull/298#discussion_r185159233
+	// https://github.com/slack-go/slack/pull/298#discussion_r185159233
 	if string(b) == "[]" {
 		return nil
 	}
--- a/vendor/github.com/slack-go/slack/views.go
+++ b/vendor/github.com/slack-go/slack/views.go
@ -0,0 +1,275 @@
+package slack
+
+import (
+	"context"
+	"encoding/json"
+)
+
+const (
+	VTModal   ViewType = "modal"
+	VTHomeTab ViewType = "home"
+)
+
+type ViewType string
+
+type ViewState struct {
+	Values map[string]map[string]BlockAction `json:"values"`
+}
+
+type View struct {
+	SlackResponse
+	ID              string           `json:"id"`
+	TeamID          string           `json:"team_id"`
+	Type            ViewType         `json:"type"`
+	Title           *TextBlockObject `json:"title"`
+	Close           *TextBlockObject `json:"close"`
+	Submit          *TextBlockObject `json:"submit"`
+	Blocks          Blocks           `json:"blocks"`
+	PrivateMetadata string           `json:"private_metadata"`
+	CallbackID      string           `json:"callback_id"`
+	State           *ViewState       `json:"state"`
+	Hash            string           `json:"hash"`
+	ClearOnClose    bool             `json:"clear_on_close"`
+	NotifyOnClose   bool             `json:"notify_on_close"`
+	RootViewID      string           `json:"root_view_id"`
+	PreviousViewID  string           `json:"previous_view_id"`
+	AppID           string           `json:"app_id"`
+	ExternalID      string           `json:"external_id"`
+	BotID           string           `json:"bot_id"`
+}
+
+type ViewSubmissionCallback struct {
+	Hash string `json:"hash"`
+}
+
+type ViewClosedCallback struct {
+	IsCleared bool `json:"is_cleared"`
+}
+
+const (
+	RAClear  ViewResponseAction = "clear"
+	RAUpdate ViewResponseAction = "update"
+	RAPush   ViewResponseAction = "push"
+	RAErrors ViewResponseAction = "errors"
+)
+
+type ViewResponseAction string
+
+type ViewSubmissionResponse struct {
+	ResponseAction ViewResponseAction `json:"response_action"`
+	View           *ModalViewRequest  `json:"view,omitempty"`
+	Errors         map[string]string  `json:"errors,omitempty"`
+}
+
+func NewClearViewSubmissionResponse() *ViewSubmissionResponse {
+	return &ViewSubmissionResponse{
+		ResponseAction: RAClear,
+	}
+}
+
+func NewUpdateViewSubmissionResponse(view *ModalViewRequest) *ViewSubmissionResponse {
+	return &ViewSubmissionResponse{
+		ResponseAction: RAUpdate,
+		View:           view,
+	}
+}
+
+func NewPushViewSubmissionResponse(view *ModalViewRequest) *ViewSubmissionResponse {
+	return &ViewSubmissionResponse{
+		ResponseAction: RAPush,
+		View:           view,
+	}
+}
+
+func NewErrorsViewSubmissionResponse(errors map[string]string) *ViewSubmissionResponse {
+	return &ViewSubmissionResponse{
+		ResponseAction: RAErrors,
+		Errors:         errors,
+	}
+}
+
+type ModalViewRequest struct {
+	Type            ViewType         `json:"type"`
+	Title           *TextBlockObject `json:"title"`
+	Blocks          Blocks           `json:"blocks"`
+	Close           *TextBlockObject `json:"close,omitempty"`
+	Submit          *TextBlockObject `json:"submit,omitempty"`
+	PrivateMetadata string           `json:"private_metadata,omitempty"`
+	CallbackID      string           `json:"callback_id,omitempty"`
+	ClearOnClose    bool             `json:"clear_on_close,omitempty"`
+	NotifyOnClose   bool             `json:"notify_on_close,omitempty"`
+	ExternalID      string           `json:"external_id,omitempty"`
+}
+
+func (v *ModalViewRequest) ViewType() ViewType {
+	return v.Type
+}
+
+type HomeTabViewRequest struct {
+	Type            ViewType `json:"type"`
+	Blocks          Blocks   `json:"blocks"`
+	PrivateMetadata string   `json:"private_metadata,omitempty"`
+	CallbackID      string   `json:"callback_id,omitempty"`
+	ExternalID      string   `json:"external_id,omitempty"`
+}
+
+func (v *HomeTabViewRequest) ViewType() ViewType {
+	return v.Type
+}
+
+type openViewRequest struct {
+	TriggerID string           `json:"trigger_id"`
+	View      ModalViewRequest `json:"view"`
+}
+
+type publishViewRequest struct {
+	UserID string             `json:"user_id"`
+	View   HomeTabViewRequest `json:"view"`
+	Hash   string             `json:"hash,omitempty"`
+}
+
+type pushViewRequest struct {
+	TriggerID string           `json:"trigger_id"`
+	View      ModalViewRequest `json:"view"`
+}
+
+type updateViewRequest struct {
+	View       ModalViewRequest `json:"view"`
+	ExternalID string           `json:"external_id,omitempty"`
+	Hash       string           `json:"hash,omitempty"`
+	ViewID     string           `json:"view_id,omitempty"`
+}
+
+type ViewResponse struct {
+	SlackResponse
+	View `json:"view"`
+}
+
+// OpenView opens a view for a user.
+func (api *Client) OpenView(triggerID string, view ModalViewRequest) (*ViewResponse, error) {
+	return api.OpenViewContext(context.Background(), triggerID, view)
+}
+
+// OpenViewContext opens a view for a user with a custom context.
+func (api *Client) OpenViewContext(
+	ctx context.Context,
+	triggerID string,
+	view ModalViewRequest,
+) (*ViewResponse, error) {
+	if triggerID == "" {
+		return nil, ErrParametersMissing
+	}
+	req := openViewRequest{
+		TriggerID: triggerID,
+		View:      view,
+	}
+	encoded, err := json.Marshal(req)
+	if err != nil {
+		return nil, err
+	}
+	endpoint := api.endpoint + "views.open"
+	resp := &ViewResponse{}
+	err = postJSON(ctx, api.httpclient, endpoint, api.token, encoded, resp, api)
+	if err != nil {
+		return nil, err
+	}
+	return resp, resp.Err()
+}
+
+// PublishView publishes a static view for a user.
+func (api *Client) PublishView(userID string, view HomeTabViewRequest, hash string) (*ViewResponse, error) {
+	return api.PublishViewContext(context.Background(), userID, view, hash)
+}
+
+// PublishViewContext publishes a static view for a user with a custom context.
+func (api *Client) PublishViewContext(
+	ctx context.Context,
+	userID string,
+	view HomeTabViewRequest,
+	hash string,
+) (*ViewResponse, error) {
+	if userID == "" {
+		return nil, ErrParametersMissing
+	}
+	req := publishViewRequest{
+		UserID: userID,
+		View:   view,
+		Hash:   hash,
+	}
+	encoded, err := json.Marshal(req)
+	if err != nil {
+		return nil, err
+	}
+	endpoint := api.endpoint + "views.publish"
+	resp := &ViewResponse{}
+	err = postJSON(ctx, api.httpclient, endpoint, api.token, encoded, resp, api)
+	if err != nil {
+		return nil, err
+	}
+	return resp, resp.Err()
+}
+
+// PushView pushes a view onto the stack of a root view.
+func (api *Client) PushView(triggerID string, view ModalViewRequest) (*ViewResponse, error) {
+	return api.PushViewContext(context.Background(), triggerID, view)
+}
+
+// PublishViewContext pushes a view onto the stack of a root view with a custom context.
+func (api *Client) PushViewContext(
+	ctx context.Context,
+	triggerID string,
+	view ModalViewRequest,
+) (*ViewResponse, error) {
+	if triggerID == "" {
+		return nil, ErrParametersMissing
+	}
+	req := pushViewRequest{
+		TriggerID: triggerID,
+		View:      view,
+	}
+	encoded, err := json.Marshal(req)
+	if err != nil {
+		return nil, err
+	}
+	endpoint := api.endpoint + "views.push"
+	resp := &ViewResponse{}
+	err = postJSON(ctx, api.httpclient, endpoint, api.token, encoded, resp, api)
+	if err != nil {
+		return nil, err
+	}
+	return resp, resp.Err()
+}
+
+// UpdateView updates an existing view.
+func (api *Client) UpdateView(view ModalViewRequest, externalID, hash, viewID string) (*ViewResponse, error) {
+	return api.UpdateViewContext(context.Background(), view, externalID, hash, viewID)
+}
+
+// UpdateViewContext updates an existing view with a custom context.
+func (api *Client) UpdateViewContext(
+	ctx context.Context,
+	view ModalViewRequest,
+	externalID, hash,
+	viewID string,
+) (*ViewResponse, error) {
+	if externalID == "" && viewID == "" {
+		return nil, ErrParametersMissing
+	}
+	req := updateViewRequest{
+		View:       view,
+		ExternalID: externalID,
+		Hash:       hash,
+		ViewID:     viewID,
+	}
+	encoded, err := json.Marshal(req)
+	if err != nil {
+		return nil, err
+	}
+	endpoint := api.endpoint + "views.update"
+	resp := &ViewResponse{}
+	err = postJSON(ctx, api.httpclient, endpoint, api.token, encoded, resp, api)
+	if err != nil {
+		return nil, err
+	}
+	return resp, resp.Err()
+}
--- a/vendor/github.com/slack-go/slack/webhooks.go
+++ b/vendor/github.com/slack-go/slack/webhooks.go
@ -1,11 +1,8 @@
 package slack

 import (
-	"bytes"
-	"encoding/json"
+	"context"
 	"net/http"
-
-	"github.com/pkg/errors"
 )

 type WebhookMessage struct {
@ -20,21 +17,13 @@ type WebhookMessage struct {
 }

 func PostWebhook(url string, msg *WebhookMessage) error {
-	return PostWebhookCustomHTTP(url, http.DefaultClient, msg)
+	return PostWebhookCustomHTTPContext(context.Background(), url, http.DefaultClient, msg)
+}
+
+func PostWebhookContext(ctx context.Context, url string, msg *WebhookMessage) error {
+	return PostWebhookCustomHTTPContext(ctx, url, http.DefaultClient, msg)
 }

 func PostWebhookCustomHTTP(url string, httpClient *http.Client, msg *WebhookMessage) error {
-	raw, err := json.Marshal(msg)
-
-	if err != nil {
-		return errors.Wrap(err, "marshal failed")
-	}
-
-	response, err := httpClient.Post(url, "application/json", bytes.NewReader(raw))
-
-	if err != nil {
-		return errors.Wrap(err, "failed to post webhook")
-	}
-
-	return checkStatusCode(response, discard{})
+	return PostWebhookCustomHTTPContext(context.Background(), url, httpClient, msg)
 }
--- a/vendor/github.com/slack-go/slack/webhooks_go112.go
+++ b/vendor/github.com/slack-go/slack/webhooks_go112.go
@ -0,0 +1,34 @@
+// +build !go1.13
+
+package slack
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"net/http"
+
+	"github.com/pkg/errors"
+)
+
+func PostWebhookCustomHTTPContext(ctx context.Context, url string, httpClient *http.Client, msg *WebhookMessage) error {
+	raw, err := json.Marshal(msg)
+	if err != nil {
+		return errors.Wrap(err, "marshal failed")
+	}
+
+	req, err := http.NewRequest(http.MethodPost, url, bytes.NewReader(raw))
+	if err != nil {
+		return errors.Wrap(err, "failed new request")
+	}
+	req = req.WithContext(ctx)
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := httpClient.Do(req)
+	if err != nil {
+		return errors.Wrap(err, "failed to post webhook")
+	}
+	defer resp.Body.Close()
+
+	return checkStatusCode(resp, discard{})
+}
--- a/vendor/github.com/slack-go/slack/webhooks_go113.go
+++ b/vendor/github.com/slack-go/slack/webhooks_go113.go
@ -0,0 +1,33 @@
+// +build go1.13
+
+package slack
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"net/http"
+
+	"github.com/pkg/errors"
+)
+
+func PostWebhookCustomHTTPContext(ctx context.Context, url string, httpClient *http.Client, msg *WebhookMessage) error {
+	raw, err := json.Marshal(msg)
+	if err != nil {
+		return errors.Wrap(err, "marshal failed")
+	}
+
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(raw))
+	if err != nil {
+		return errors.Wrap(err, "failed new request")
+	}
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := httpClient.Do(req)
+	if err != nil {
+		return errors.Wrap(err, "failed to post webhook")
+	}
+	defer resp.Body.Close()
+
+	return checkStatusCode(resp, discard{})
+}
--- a/vendor/github.com/slack-go/slack/websocket.go
+++ b/vendor/github.com/slack-go/slack/websocket.go
--- a/vendor/github.com/slack-go/slack/websocket_channels.go
+++ b/vendor/github.com/slack-go/slack/websocket_channels.go
@ -45,7 +45,7 @@ type ChannelRenameEvent struct {
 type ChannelRenameInfo struct {
 	ID      string `json:"id"`
 	Name    string `json:"name"`
-	Created string `json:"created"`
+	Created int    `json:"created"`
 }

 // ChannelHistoryChangedEvent represents the Channel history changed event
--- a/vendor/github.com/slack-go/slack/websocket_desktop_notification.go
+++ b/vendor/github.com/slack-go/slack/websocket_desktop_notification.go
--- a/vendor/github.com/slack-go/slack/websocket_dm.go
+++ b/vendor/github.com/slack-go/slack/websocket_dm.go
--- a/vendor/github.com/slack-go/slack/websocket_dnd.go
+++ b/vendor/github.com/slack-go/slack/websocket_dnd.go
--- a/vendor/github.com/slack-go/slack/websocket_files.go
+++ b/vendor/github.com/slack-go/slack/websocket_files.go
--- a/vendor/github.com/slack-go/slack/websocket_groups.go
+++ b/vendor/github.com/slack-go/slack/websocket_groups.go
--- a/vendor/github.com/slack-go/slack/websocket_internals.go
+++ b/vendor/github.com/slack-go/slack/websocket_internals.go
--- a/vendor/github.com/slack-go/slack/websocket_managed_conn.go
+++ b/vendor/github.com/slack-go/slack/websocket_managed_conn.go
@ -10,8 +10,8 @@ import (
 	"time"

 	"github.com/gorilla/websocket"
-	"github.com/nlopes/slack/internal/errorsx"
-	"github.com/nlopes/slack/internal/timex"
+	"github.com/slack-go/slack/internal/errorsx"
+	"github.com/slack-go/slack/internal/timex"
 )

 // ManageConnection can be called on a Slack RTM instance returned by the
@ -577,5 +577,6 @@ var EventMapping = map[string]interface{}{
 	"subteam_self_removed": SubteamSelfRemovedEvent{},
 	"subteam_updated":      SubteamUpdatedEvent{},

-	"desktop_notification": DesktopNotificationEvent{},
+	"desktop_notification":       DesktopNotificationEvent{},
+	"mobile_in_app_notification": MobileInAppNotificationEvent{},
 }
--- a/vendor/github.com/slack-go/slack/websocket_misc.go
+++ b/vendor/github.com/slack-go/slack/websocket_misc.go
--- a/vendor/github.com/slack-go/slack/websocket_mobile_in_app_notification.go
+++ b/vendor/github.com/slack-go/slack/websocket_mobile_in_app_notification.go
@ -0,0 +1,20 @@
+package slack
+
+// MobileInAppNotificationEvent represents the update event for Mobile App Notification.
+type MobileInAppNotificationEvent struct {
+	Type              string `json:"type"`
+	Title             string `json:"title"`
+	Subtitle          string `json:"subtitle"`
+	Timestamp         string `json:"ts"`
+	Channel           string `json:"channel"`
+	AvatarImage       string `json:"avatarImage"`
+	IsShared          bool   `json:"is_shared"`
+	ChannelName       string `json:"channel_name"`
+	AuthorID          string `json:"author_id"`
+	AuthorDisplayName string `json:"author_display_name"`
+	MessageText       string `json:"msg_text"`
+	PushID            string `json:"push_id"`
+	NotifcationID     string `json:"notif_id"`
+	MobileLaunchURI   string `json:"mobileLaunchUri"`
+	EventTimestamp    string `json:"event_ts"`
+}
--- a/vendor/github.com/slack-go/slack/websocket_pins.go
+++ b/vendor/github.com/slack-go/slack/websocket_pins.go
--- a/vendor/github.com/slack-go/slack/websocket_reactions.go
+++ b/vendor/github.com/slack-go/slack/websocket_reactions.go
--- a/Show More
+++ b/Show More