Added the MultiSelectionMenu widget as a replacement for the SelectionMenu widget. The MultiSelectionMenu adds multiple selection, pythonic accessors and operators, cascadeable menus. A decrecation warning has been added to SelectionMenu.
Updated the .gitignore to include VIM temporary .swp files.
Changed the EnumPlugValueWidget and the FormatPlugValueWidget to use the MultiSelectionMenu.
Added the extension .tmp to .gitignore.
Hid the "enabled" plug from all ImageNodes to bring the interface inline with the scene nodes. In the future it may be moved to a separate tab?
 - Updated the MultiSelectionMenu to use "getSelection" and "setSelection" rather than "getSelected" and "setSelected"
 - Fixed a minor bug.
 - Added the appendToSelection() method.
 - Updated the test benches.
 - Updated the EnumPlugValueWidget and the FormatPlugValueWidget
Fixed a small bug that forced one selection even when a allowMultipleSelection == True
Fixed a bug where a selection wasn't being kept when alwaysHaveASelection==True
Made suggested changes.
correcting signal name
Fixed a broken test case where the menu widget wasn't being destroyed correctly.
Resolved a conflict
Merge pull request #57 from goddardl/master

MultiSelectionMenu