* add `AppliedTags` property
* convert collections into immutable arrays
* remove "not supported" remark
* implement `ThreadChannelProperties`
* Add `DefaultSlowModeInterval` and `DefaultSlowModeInterval` properties to forum channels
* add `Moderated` property to `ForumTag``
* `ForumTag` inherits `ISnowflakeEntity`
* Fix `DiscordRestClient.GetChannelAsync` not getting forum channel
* a lot of changes
added:
- channel flags
- `ForumTagBuilder`
- imroved channel modification
* fixed a bug in forum tag emoji parsing
* inherit forum channel from `INesteeChannel`
* implement `INestedChannel` in forum channels
* Add `Flags` property to channels
* add iteraface for forum tags & add equality operators
* Add default reaction emoji property
* add support for modifing default reaction & some renaming
* add createForumChannelAsync to guild
* *fix resharper being a d... and moving code to next line*
* add a `ForumChannels` property
* Some fixes & add support for `default_sort_order`
* fix misleading comment
* fix#2502
* support creating post with applied tags
* fix xmldoc
* set category id on model update
* add limit checks for tag count
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