* Mark *PreferencesFragment as @Keep
PreferenceFragment references them by string name, which doesn't work after
ProGuard has obfuscated the code in release mode. The name is no longer
valid and the app crashes.
Fixes https://github.com/tuskyapp/Tusky/issues/3161
* Prefer to keep Preference classes with a Proguard rule
Ensures that all PreferenceFragmentCompat are kept, to prevent the risk
that this could break in a new fragment where `@Keep` is accidentally
omitted.
* update gradle, kotlin and other dependencies
* fix new warnings
* remove unused import
* update Proguard rules
* add explicit dependency on Gson to get the newest version
* remove debug flag from proguard rules again
* fix typo
* convert EmojiPreference and EmojiCompatFont to Kotlin
* move preference related to to dedicated preference package
* update proguard-rules.pro
* reformat & add comment
* maintain disposable information in EmojiPreference instead of EmojiCompatFont
* Replace Picasso library with Glide library tuskyapp#1082
* Replace Picasso library with Glide library tuskyapp#1082
* Update load emoji with glide
* Update context used for Glide
* Removed unused import
* Replace deprecated SimpleTarget with CustomTarget
* Fix crash at the view image fragment, remove override image size
* Replace Single.create with Single.fromCallable
* View image fragment refactor
* Fix after merge
* Try to load cached image first and show progress view on failure
* Try to load cached image first and show progress view on failure
