chore(release): v2.3.75

- fix: VoiceStateUpdate event not working (DM channels + Group DM channels)
- docs: add sendSlash method
- feat: Add new Event: callCreate, callUpdate, callDelete
- fix(GroupDM): method require Class

src/client/websocket/handlers/CALL_UPDATE.js

@@ -0,0 +1,12 @@
+'use strict';
+const { Events } = require('../../../util/Constants');
+module.exports = (client, packet) => {
+  /**
+   * Emitted whenever update a call
+   * @event Client#callUpdate
+   * @param {Snowflake} channelId DM / Group DM channel ID
+   * @param {string} region Voice server region
+   * @param {?Snowflake[]} ringing List of user ID who is ringing
+   */
+  client.emit(Events.CALL_UPDATE, packet.d.channel_id, packet.d.region, packet.d.ringing);
+};