Pachli 1.3.0

New features:

-  Add a preference to hide "self-boosts"
-  Show full display and username in profile view
-  Improve display of "obscured" links
-  Adjust video playback UX behaviour

Fixes:

-  Ensure empty timeline message is visible
-  Use Pachli blue and orange for notification icons
-  Show media when resuming ViewMediaFragment
-  Show thread indicators and other dividers using Material colours

Translations:

-  Update Polish and Japanese translations
