Handle uninstalled custom node
Fix console window show/hide/resize + test cases
Port FileWriter and ImageFileWriter
Merge branch 'master' of github.com:DynamoDS/Dynamo
add the missing migration tag to List.LastItem
change the function signature of string.ChangeCase
Fix changeSetApplier on handling VM graphnodes

1. Use the OriginalAST property to check for redefined statements .
AstID is only used within the core VM execution
2. Fix old testcases with invalid results
3 Add testcase simulating  modification of connections to a CBN
Some cleanup and fix for MAGN-3275, MAGN-3268
Merge branch 'master' of https://github.com/DynamoDS/Dynamo
Default parameters for ReferencePoint.ByCoordinates, FamilyInstance.ByCoordinates
Integration testing for Revit to ASM solid conversion
Add the UnitsUI project into the solution.
Add comment for CustomNodeDefinition
Update test case status
Merge pull request #1596 from ke-yu/fix_customnode

Handle uninstalled custom node
Merge pull request #1599 from Randy-Ma/master

Port FileWriter and ImageFileWriter
Merge pull request #1607 from ellensi/ConsoleWindow

Fix for console window (with test cases)
Merge pull request #1608 from Zhengzi/Migration

add the missing migration tag to List.LastItem
Merge pull request #1609 from Zhengzi/Migration2

change the function signature of string.ChangeCase
Merge pull request #1611 from junmendoza/newMaster

Fix changeSetApplier on handling VM graphnodes