Added missing features

go.mod

@@ -4,3 +4,5 @@ require (
 	github.com/gorilla/websocket v1.4.0
 	golang.org/x/crypto v0.0.0-20181030102418-4d3f4d9ffa16
 )
+
+go 1.13

structs.go

@@ -590,6 +590,7 @@ type Presence struct {
 	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"`
@@ -604,6 +605,7 @@ const (
 	GameTypeStreaming
 	GameTypeListening
 	GameTypeWatching
+	GameTypeCustom
 )
 
 // A Game struct holds the name of the "playing .." game for a user