Add activities and clientStatus support (#449)

* Add client_status from PRESENCE_UPDATE to Member class
- Status for all three clients is always present, defaults to "offline"

* Add "dnd" to as supported status in documentation

* Add member activities to Member class
- Raw data, for now

* Add clientStatus and activities to old presence in presenceUpdate event

* Remove redundant object, add undefined check

lib/gateway/Shard.js

@@ -271,7 +271,9 @@ class Shard extends EventEmitter {
                 if(member) {
                     oldPresence = {
                         game: member.game,
-                        status: member.status
+                        status: member.status,
+                        clientStatus: member.clientStatus,
+                        activities: member.activities
                     };
                 }
                 if((!member && packet.d.user.username) || oldPresence) {

lib/structures/Member.js

@@ -12,9 +12,14 @@ const VoiceState = require("./VoiceState");
 * @prop {String} mention A string that mentions the member
 * @prop {Guild} guild The guild the member is in
 * @prop {Number} joinedAt Timestamp of when the member joined the guild
-* @prop {String} status The member's status. Either "online", "idle", or "offline"
+* @prop {String} status The member's status. Either "online", "idle", "dnd", or "offline"
 * @prop {Object?} game The active game the member is playing
 * @prop {String} game.name The name of the active game
+* @prop {Object} clientStatus The member's per-client status
+* @prop {String} clientStatus.web The member's status on web. Either "online", "idle", "dnd", or "offline". Will be "online" for bots
+* @prop {String} clientStatus.desktop The member's status on desktop. Either "online", "idle", "dnd", or "offline". Will be "offline" for bots
+* @prop {String} clientStatus.mobile The member's status on mobile. Either "online", "idle", "dnd", or "offline". Will be "offline" for bots
+* @prop {Object[]} activities The member's current activities
 * @prop {Number} game.type The type of the active game (0 is default, 1 is Twitch, 2 is YouTube)
 * @prop {String?} game.url The url of the active game
 * @prop {VoiceState} voiceState The voice state of the member
@@ -56,6 +61,8 @@ class Member extends Base {
         this.status = data.status !== undefined ? data.status : this.status || "offline";
         this.game = data.game !== undefined ? data.game : this.game || null;
         this.joinedAt = data.joined_at !== undefined ? Date.parse(data.joined_at) : this.joinedAt;
+        this.clientStatus = data.client_status !== undefined ? Object.assign({ web: "offline", desktop: "offline", mobile: "offline" }, data.client_status) : this.clientStatus;
+        this.activities = data.activities;
 
         if(data.mute !== undefined) {
             this.voiceState.update(data);