Xabber Android Versions Save

• sending account presence fixed (status, priority, etc) #590;
• Smack parsing exception now just logged without disconnection;
• XEP-0352: Client State Indication implementation (thanks to Ricki Hirner).

• dark theme added;
• roster and presence subscription mechanism changed - more Smack used.

Build error fixed (correct gradle build tools verion in MemorizingTrustManager submodule).

• roster problems (groups, alises, remove/add) fixed;
• Android 6 permissions;
• fix connection for servers with Message Arcive #521;
• XEP-0191: Blocking Command implemented;
• Smack updated to 4.1.5;
• plain text auth option;
• account settings screen changed;
• some dialogs updated;
• translations updated;
• number of other small fixes and improvements.

New "Classic" launcher icon.

• modern user interface with material design;
• updated OTR library (supports OTRv1, OTRv2 and OTRv3);
• lots of other small fixes and improvements;
• Android 4+ only. Xabber Classic is available for old Android devices (2.3 and earlier);
• removed services that are no longer XMPP compatible (Facebook, VK, etc.);
• dark theme temporary removed;

Special thanks to Ahmed El-Mahmoudy, who helped us greatly.

• File links got parsed and can be downloaded, images are shown in chat;
• HTTP file upload (XEP-0363) implementation;
• avatar updating hashes improved (XEP-0153);
• “delivery reports” for conferences;
• Swedish and Turkish translations added. Other translations updated (thanks to translators!).

• MUC: private chats, conference information, etc;
• capital letters file extensions problem fixed;
• Spanish, Italian, Japanese, Portuguese and Slovak translations updated.