Remove opdata_d from StackValue
Replace optype comparision with function
Code cleanup for optype checking
Remove namespace prefix for long code
Remove StackUtils.Equals() extension method
Add GraphLayout project
Move more extension functions from StackUtils to StackValue
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into Recharge_Ellensi
Update code based on code review comments
Add missing file
Change type checking functions in StackValue to properties
Conditionally disable opdata and opdata_d unification
Minor clean up to make code more readable
Add comments to desribe the hacking used for arraykey representation
Remove StackValue.ToString()
Clean up work
Implement cycle and transitive edges removal

for GraphLayout project
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into Recharge_Ellensi
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into Recharge_Ellensi
Implement layer assignment

for GraphLayout project