Added Korean locale, bug fixes
Move to API layer 17, bug fixes
Merge branch 'dev'
Updated database structure, updated sqlite (don't use this source code, it may be changed)
Fixes (unstable, don't upload to markets)
Different improvements
Stability improvements
Updated readme
Merge branch 'master' into dev
Update secret chats layer
UI update
UI improvements
UI improvements
Update to layer 18, usernames support, UI improvements
Fixed video compression in Android L, bug fixes
Crash fixes
Enable screenshot detection
Different improvements
Crash fix
Bug fixes