added VarArg method info to VM and Importer
added VarArg node creation in graph UI
Fix MAGN-1342: custom node not evaluated in new session
Merge remote-tracking branch 'upstream/ChocoButter-2Become1' into ChocoButter-2Become1
Suupport ArbitraryDimensionArrayAttribute for C# parameter
Fix MAGN-1356: argument 'this' should be changed to class name with lower case
Merge remote-tracking branch 'upstream/ChocoButter-2Become1' into ChocoButter-2Become1
Merge pull request #1147 from ke-yu/ChocoButter-2Become1

Fix MAGN-1342: custom node not evaluated in new session
Merge pull request #1146 from DynamoDS/ChocoButter2B1-VarArgs

VarArg methods create VariableInputNode instances in graph
fixed missing output in python script from string
implemented Min, Max, and Sort By Key
added some docs for DSVarArgFunction
Adding migration test source file for Number node
Use ReferenceEqualityComparer as comparer for FFI's CLFObjectMap
Added utility methods GetChildNodeStringValue, GetChildNodeDoubleValue and GetChildNodeValue
Updated migration test file for NumberInput node
Added helper method Dynamo.Tests.DSEvaluationUnitTest.RunCurrentModel
Implemented NumberInput node migration and added test cases
Merge pull request #1148 from ke-yu/ChocoButter-2Become1

Use ReferenceEqualityComparer as comparer for FFI's CLFObjectMap
Fix defect in test setup