3.3.7

Added:
▪ Some localizations added & updated.
▪ User now can place custom user skins in user "data" folder. (issue #81) See "About" dialog for the exact path.
▪ User now can select if DB transactions are enabled or not. (bug #70) By default, DB transactions are now switched OFF, therefore anyone who wants better performance, must turn them ON in app settings.
▪ MySQL database backend now requires at least version 5.5, DB encoding is now changed to utf8mb4 character set. (bug #74)
▪ Height if message attachment image is now configurable, defaults to 36. (issue #69)
▪ All textual contents of all messages are now locally saved in explicit UTF-8 encoding. This is partially because of MySQL backend. We need to keep encoding of data sent to DB and encoding of DB itself in parity.

Changed:
▪ TT-RSS plugin now does NOT require service URL to be entered with "/api/" suffix. In other words, do not use that suffix now, RSS Guard will add it silently when it needs to.

Fixed:
▪ Fixed problem with strings in core being rendered untranslated. (bug #60)
▪ Fixed problem with feed updates progress bar flickering. (bug #73)
▪ Partially fixed problem with incorrect number of downloaded messages being reported. (bug #70)