* add ktlint plugin to project and apply default code style * some manual adjustments, fix wildcard imports * update CONTRIBUTING.md * fix formatting
* Move Timeline files into their own package * Introduce TimelineViewModel, add coroutines * Simplify StatusViewData * Handle timeilne fetch errors * Rework filters, fix ViewThreadFragment * Fix NotificationsFragment * Simplify Notifications and Thread, handle pin * Redo loading in TimelineViewModel * Improve error handling in TimelineViewModel * Rewrite actions in TimelineViewModel * Apply feedback after timeline factoring review * Handle initial failure in timeline correctly
* fix FragmentAdapter returning null fragments when activity was recreated * remove unused import * make activity in CustomFragmentStateAdapter private
* migrate MainActivty to ViewPager2 * migrate AccountActivty to ViewPager2 * migrate ViewMediaActivty to ViewPager2 * migrate SearchActivity to ViewPager2 * checkin missing AccountPagerAdapter file * remove unused class ImageViewPager * replace SparseArray with MutableList
