Tusky v6.0

- Timeline filters have moved to Account Preferences and will sync with the server
- You can now have a custom hashtag as tab in the main interface
- Lists can now be edited
- Security: removed support for TLS 1.0 and TLS 1.1, and added support for TLS 1.3 on Android 6+
- The compose view will now suggest custom emojis when starting to type
- New theme setting "follow system theme"
- Improved timeline accessibility
- Tusky will now ignore unknown notifications and no longer crash
- New setting: You can now override the system language and set a different language in Tusky
- New translations: Czech and Esperanto
- A lot of other improvements and fixes
