Improved test case with node retrieval through its explicit GUID
Fixed a stack overflow in "DropDrownBase.SetupCustomUIElements"
Merge branch 'ChocoButter-2Become1' into CrossFade
Fixed null object dereference in DSElementSelection.BuildOutputAst
Adding 'backup' extension to ignore list
Fixed an issue with loading "DSVarArgFunction" node (Definition == null)
Make 'DSVarArgFunction' default constructor private instead
Merge branch 'ChocoButter-2Become1' into CrossFade