New features:
- Support for five priorities (via X-Priority, #24) mapped to Android priorities
- Support for notification title (via X-Title, #24)
- Support for tags and emojis (via X-Tags, #24)
Usability improvements:
- Support deep links for https://ntfy.sh/.. topics (#20)
- Add "clear all notifications" menu item (#21)
- Auto-complete for "use another server" feature (#13)
- Expanding notifications to read entire text (no ticket)
- Color "Permanently delete" buttons red (no ticket)