- update to 2.7.9
- fix problem about switch to tsin from systray
- add %flag_keypad_input_key to .cin files
- fix problem about Ctrl+Shift+* in firefox
- use gtk2 UI as default
- add vietnamese and german input method support
- remove chewing support temporary, need more develpment
- screen keyboard will keep on the top of all applications
- other minor bugs fixed