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
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
Merge pull request #1614 from ellensi/RecordedTestCasesUpdate

Test case category update
Fix MAGN-3264: longest lacing does not work for default argument
Fix magn-1525: wrong error msg when a non existent constructor is being called
Merge pull request #1615 from ke-yu/fix_magn_3264

Fix MAGN-3264: longest lacing does not work for default argument
Merge pull request #1616 from ke-yu/fix_magn1525

Fix magn-1525: wrong error msg when a non existent constructor is being called