Implement shutdown idle promise stack. #MAGN-223.
Renable visualization update when full screen watched turned on.
Convert to using visualizers. First pass.
Cleanup of isDrawable
Get rid of DrawableNode.
Convert revit to use visualizers.
Get rid of geometry collections.
Cleanup visualize thread. Avoid re-iteration.
Curve loops drawing again.
Fix for issue 511 brining note placement into line with node placement

https://github.com/ikeough/Dynamo/issues/511
Merge branch 'master' of github.com:ikeough/Dynamo
Visualization manager tests running clean again.
Add one test. Clarify some viz manager methods.
tests for node collapsing
Don't use geom keeper on selection nodes. Clear visualizations when cleaning up the controller.
Merge branch 'master' of github.com:ikeough/Dynamo
Null check on object for visualizer.
Start of Dynamo Test Framework project.
Use command to request watch3d visualization assets.
Remove a slow logger. Don't throttle particle system. Draw particle system to geom keeper.