Fixes MAGN-4817. Simplified convesion from a Autodesk.DesignScript.Arc to a Revit Arc, using 3 point constructor.
Merge branch 'master' into MAGN-4817
Added test case for tilted arc
Removed "NodeViewModel.OldValue" property
Removed "EngineController.GetStringValue", it's not referenced
First pass
UI cleanup of search
Various performance improvements/tweaks
Misc cleanup
Fixed deadlock in Watch3DView.VisualizationManagerRenderComplete
Updated "AutomationSettings" to wait for evaluation timer
Minor fixes
Restored all "PauseAfterPlaybackInMs" value to default of "10ms"
Turned "AutomationSettings.HasPendingEvaluation" into a property
Merge pull request #2947 from Benglin/Flaky

Fixed flakiness in recorded tests
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into OldValueMustDie
Fix to filter classes hidden from library after detecting namespace collisions in autocomplete
Merge pull request #2908 from Benglin/OldValueMustDie

Removed "NodeViewModel.OldValue" property
Merge pull request #2954 from Benglin/Revit2015

Cross merging master changes into Revit 2015
Merge pull request #2941 from Benglin/DeadLock

Fixed deadlock in VisualizationManagerRenderComplete