Open button on mouseover, if found opened menu/button on the same toolbar
Add "useFolderTitle" option (experimental)
Dispatch fake "popupshowing" event to get new folder title after folder was changed
Use Application.prefs.getValue()/setValue() with Unicode support
Don't confuse other consumers of "popupshowing" event:
Someone like https://github.com/Infocatcher/Bookmarks_Menu_Filter may want "popupshown", "popuphiding", "popuphidden"...
Bump version to 0.1.1pre - 2013-01-27