New: Added new representation to maya env.
Update: Representations are now working in Maya.
New: Added new attribute called ``version`` to ``FileReference`` node in Maya which returns the Stalker Version instance related to this reference.
New: Added new publisher to delete Turtle nodes in Maya.
New: Added new publisher to delete unknown nodes in Maya.
New: Updated toolbox.py to include proper representation switching functionality.
Update: ASS representations generation is now working properly.
Update: Removed publish script that removes the Turtle nodes.