Overlay Thunderbird's AppMenu (#100)
Add "Build Identifier" Toolbar Icon to SeaMonkey's main window (#154)
Change toolbar button's behavior to offer copy to clipboard if no text box is selected (#153)
Merge landed pull requests #110, #158 and #156
Bump version to 3.7pre20131013 and release to AMO Beta channel
Merge pull request #26 from xabolcs/beta

up version to avoid AMO downgrade