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)