* src: Update channel pattern
* src: Remove useless non-capture group
* src: it's as though we're starting fresh
* src: Bring this up to date for reals now
* src: typings and a bug fix
* src: Add crossposted channels to message mentions
* src: Requested changes and add typings
* src: Move Object.keys outside loop
* typings: Fix enum being exported when it shouldn't
* src: Consistency with roles and users
* docs: Correct docstring for MessageFlags#flags
* docs: Correct docstring for MessageMentions#crosspostedChannels
* docs: Suggestions
Co-authored-by: SpaceEEC
* src: Reset flags to 0 if no flags are received on MESSAGE_UPDATE
