Fixed Issue MAGN4944
Updated as feedback from Sharad
Added comment
Merge pull request #2731 from theanh0512/Magn4944

Fixed Issue MAGN4944
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into VMGraphTools
Recursive reachability analysis

Find dirty nodes recursively when detecting reachable nodes. This will
allow the static analysis on affected graphnodes