Improve application initialization process.
Improve database optimizer dialog.
Change theme file data structure.
Theme subsystem implementing...

Reordered theme profile xml.
Fix some bugs.
Fixed: userstreams is disconnected sometimes unexpectedly.

Receiving invalid JSON data caused disconnection of userstreams.
Furthermore, disconnection of userstreams caused by this issue was not detected.
Implementing timeline theme system.
Implemented timeline theme system.
Implemented backstage theme.
Improve user stream error message.
Theme system was fully implemented. (but some works about themes still remained.)
Improve theme subsystems.

Improve behavior of theme settings.
Fix coloring of tweet multiple action panel.
Fixed: colors of default theme

Color of the retweet button had not been  correctly specified.
Add version check code for theme profile.
Increment build number for releasing pre-release binary.
Fix some bugs, and add assertions.
Fix: conversations could not be opened.
Fix input suggstion text has wrong color.
Fix: could not receive messages via user streams.
Increment version.
Initialize image before loading new bitmap.