Added 3 Test Cases generated from defects.
Merge branch 'ChocoButter' of https://github.com/ikeough/Dynamo into ChocoButter
Merge pull request #1015 from junmendoza/ChocoButterJun

Update DS dlls
Mark function node as dirty after custom node is udpated
Merge pull request #1018 from ke-yu/ChocoButter

Mark function node as dirty after custom node is udpated
Merge pull request #994 from riteshchandawar/ChocoButter

Added 3 Test Cases generated from defects.
update ds dlls - function redef