* Add notification bell button, API endpoints and new relationship field
* Add notification type for subscriptions
* Add subscriptions to legacy notification filtering
* Update schemas
* Fix build
* Make rewrite static method into method of Notification class, fix getNotificationText
* Mastodon wording for subscriptions
* Convert ComposeActivity to Kotlin
* More ComposeActivity cleanups
* Move ComposeActivity to it's own package
* Remove ComposeActivity.IntentBuilder
* Re-do part of the media downsizing/uploading
* Add sending of status to ViewModel, draft media descriptions
* Allow uploading video, update description after uploading
* Enable camera, enable upload cancelling
* Cleanup of ComposeActivity
* Extract CaptionDialog, extract ComposeActivity methods
* Fix handling of redrafted media
* Add initial state and media uploading out of Activity
* Change ComposeOptions.mentionedUsernames to be Set rather than List
We probably don't want repeated usernames when we are writing a post
and Set provides such guarantee for free plus it tells it to the
callers. The only disadvantage is lack of order but it shouldn't be a
problem.
* Add combineOptionalLiveData. Add docs.
It it useful for nullable LiveData's. I think we cannot differentiate
between value not being set and value being null so I just added the
variant without null check.
* Add poll support to Compose.
* cleanup code
* move more classes into compose package
* cleanup code
* fix button behavior
* add error handling for media upload
* add caching for instance data again
* merge develop
* fix scheduled toots
* delete unused string
* cleanup ComposeActivity
* fix restoring media from drafts
* make media upload code a little bit clearer
* cleanup autocomplete search code
* avoid duplicate object creation in SavedTootActivity
* perf: avoid unnecessary work when initializing ComposeActivity
* add license header to new files
* use small toot button on bigger displays
* fix ComposeActivityTest
* fix bad merge
* use Singles.zip instead of Single.zip
* show poll notifications in the app
* show poll notifications in the app
* allow filtering poll notifications in the poll fragment
* show poll notifications in system notifications
* Issue tuskyapp#762 add clear notifications button to the top of the Notifications adapter
* Issue tuskyapp#764 add the notifications filter
* Update notifications top bar buttons
* Replace PopupMenu with PopupWindow. Save notifications filter to the account table
* Disable hide top bar on empty content at the notification screen
* Add app bar behavior to the sw640 notification layout
* Fix issue with click on top notification tab
