Added Missing CustomStatus type, and Missing Slice for Activities which gets returned now because custom triggers a presnece update

go.mod

@@ -5,4 +5,4 @@ require (
 	golang.org/x/crypto v0.0.0-20181030102418-4d3f4d9ffa16
 )
 
-go 1.10
+go 1.13

structs.go

@@ -587,12 +587,13 @@ type VoiceState struct {
 
 // A Presence stores the online, offline, or idle and game status of Guild members.
 type Presence struct {
-	User   *User    `json:"user"`
-	Status Status   `json:"status"`
-	Game   *Game    `json:"game"`
-	Nick   string   `json:"nick"`
-	Roles  []string `json:"roles"`
-	Since  *int     `json:"since"`
+	User       *User    `json:"user"`
+	Status     Status   `json:"status"`
+	Game       *Game    `json:"game"`
+	Activities []*Game  `json:"activities"`
+	Nick       string   `json:"nick"`
+	Roles      []string `json:"roles"`
+	Since      *int     `json:"since"`
 }
 
 // GameType is the type of "game" (see GameType* consts) in the Game struct
@@ -604,6 +605,7 @@ const (
 	GameTypeStreaming
 	GameTypeListening
 	GameTypeWatching
+	GameTypeCustom
 )
 
 // A Game struct holds the name of the "playing .." game for a user