Usage open() and close() methods for every action
Rename Gdk to Gdk2
Add basic GTK3 support
Merge Gdk3.jsm and Gdk2.jsm to Gdk.jsm
Fix HTitleTools.lowerWindow()
Create HTitleShare.jsm
Rename HTitleTools.jsm to HTitleUtils.jsm
Add simple detection gtk version
Fix getting GTK+ version