Partials (#3070)

* Remove GroupDMChannels

they sparked no joy

* Start partials for message deletion

* MessageUpdate partials

* Add partials as an opt-in client option

* Add fetch() to Message

* Message.author should never be undefined

* Fix channels being the wrong type

* Allow fetching channels

* Refactor and add reaction add partials

* Reaction remove partials

* Check for emoji first

* fix message fetching

janky

* User partials in audit logs

* refactor overwrite code

* guild member partials

* partials as a whitelist

* document GuildMember#fetch

* fix: check whether a structure is a partial, not whether cache is true

* typings: Updated for latest commit (#3075)

* partials: fix messageUpdate behaviour (now "old" message can be partial)

* partials: add warnings and docs

* partials: add partials to index.yml

* partials: tighten "partial" definitions

* partials: fix embed-only messages counting as partials

src/client/websocket/handlers/CHANNEL_PINS_UPDATE.js

@@ -14,7 +14,7 @@ module.exports = (client, { d: data }) => {
      * Emitted whenever the pins of a channel are updated. Due to the nature of the WebSocket event,
      * not much information can be provided easily here - you need to manually check the pins yourself.
      * @event Client#channelPinsUpdate
-     * @param {DMChannel|GroupDMChannel|TextChannel} channel The channel that the pins update occured in
+     * @param {DMChannel|TextChannel} channel The channel that the pins update occured in
      * @param {Date} time The time of the pins update
      */
     client.emit(Events.CHANNEL_PINS_UPDATE, channel, time);

src/client/websocket/handlers/CHANNEL_UPDATE.js

@@ -8,8 +8,8 @@ module.exports = (client, packet) => {
     /**
      * Emitted whenever a channel is updated - e.g. name change, topic change.
      * @event Client#channelUpdate
-     * @param {DMChannel|GroupDMChannel|GuildChannel} oldChannel The channel before the update
-     * @param {DMChannel|GroupDMChannel|GuildChannel} newChannel The channel after the update
+     * @param {DMChannel|GuildChannel} oldChannel The channel before the update
+     * @param {DMChannel|GuildChannel} newChannel The channel after the update
      */
     client.emit(Events.CHANNEL_UPDATE, old, updated);
   }