added obsolete attribute to zt importer
marked various file nodes as obsolete
added default message
Revert "Moved failing migration tests to different folder"

This reverts commit c23301671ee3e2fcd33967a481ceb010e8e726d5.
fixin tests
Fix hard crash of Revit on Dynamo crash
First try
Return null when geob fails
C# Analytics file fix

C# Analytics file fix
Fix for Corrupted C# Analytics file

Fix for Corrupted C# Analytics file
Enhanced "ExecuteOnIdleAsync" to take "AsyncTaskCompletedHandler"
Updated "RevitDynamoModel.ResetEngine" to handle task completion
Updated "RevitDynamoModel.ResetEngine" to mark node as dirty
Fix check for global scope
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into defectfix
Re-open transaction to isolate.
Correct method signatures.

The method signatures did not match with the name or the purpose of the
nodes. Nodes should have default arguments for element and isolate so
that the user will get some behavior even if these are not provided.
Guards against view orientation failure.

These checks gaurd against two edge cases. First, if the target point
and the eye point are coincident. And second, if the direction of the
view is the Z axis (the default). Either of these would previously have
caused the construction of a ViewOrientation3D object to fail.
Put the mutation block inside the transaction.

Resetting the orientation requires a transaction.
Cleanup.