Merge branch 'master' of https://github.com/DynamoDS/Dynamo into VMGraphTools
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into VMGraphTools
ChangSetCompute for VM graphnode

1. Implement the change set computation for VM graphnodes
2. Parameterize core to the compile function so we can optionally
compile only for static analysis
Refactor compilation and graph analysis into functions
Changeset computer tests for graph reachability
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into VMGraphTools
Remove unused code
Increase sleep count for PreviewGraph thread
Add preview graph tests with depth = 3
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into VMGraphTools
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into VMGraphTools
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into VMGraphTools
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into VMGraphTools
Get graphnodes of deltaAST.

1. Get graphnodeslist of deltaAST
2. Use graphnodeslist as input to reachability analysis
Refactoring code and tests

1. Address naming conventions and removing redundant args
2. Added PreviewChangeSetTests file where all preview tests should go in
3. Refactor common code to TestFrameWork
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into VMGraphTools
Rename function
Fix comments
Address comments
Add three new structural framing nodes and unit tests.