* feat(endpoints): bumped discord version to 9
* feat: threads barebones
* feat(threads): documentation
* feat(threads): membership caching
* feat(threads): added type to StartThread method
* fix: replaced missing Timestamp definitions with time.Time
* chore: removed debug logs
* chore: removed thread alias for channel type
* feat(webhooks): separated thread option into method
* fix(state): ThreadMembersUpdate member duplication bug
* fix: golint
* feat(threads): pr fixes and BeforeUpdate in ThreadUpdate
* feat: removed unnecessary todo
* feat(state): removed thread last message update in MessageAdd
* Revert "feat(state): removed thread last message update in MessageAdd"
This reverts commit 4ca359fd2cc304e5d0ec2937e25c0c487a1f2096.
* feat(state): update only last message id for thread update
Implements updating message id in MESSAGE_CREATE and MESSAGE_DELETE events. Refer to https://discord.com/developers/docs/topics/gateway#thread-update for more info.
* fix(restapi): passing threadID in WebhookThreadExecute
* feat(state): dropped last_message_id updates for threads
* fix: gofmt
* feat(events#ThreadCreate): added newly_created field
* feat(restapi)!: corrected names of thread functions
