DynamoDS/Dynamo — pull request #2611 by junmendoza (2014-10-03 10:39:09+00:00)
Title: Implementation of graph preview

Implement the graph preview functionality
1. The changeset computer performs static analysis of the Delta ASTs against the live VM graphnodes
2. The affected guids computed by the changeset computer is the data to be passed to the UI
3. Write testcases for the changeset computer

@lukechurch @ke-yu