Hide or reveal input/output nodes depending on workspace context
Cleaned up logic and extended for more general case
Revive unit tests for hiding/showing input and output nodes
Remove crufty check in CreateNodeInternal that prevent placement of Input/Output nodes
Rename variables in testcases from 'local' to 'loc'

This is to avoid name clash with the 'local' keyword
Syntax support for the local keyword
Merge pull request #1937 from pboyer/IOHiding

MAGN-1314: Hide Input & Output nodes in Home Workspace
Update nested lang testcases and add new testcase
Add dynamic dispatch for Units on SetParameter.
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into localkw
Addressed review comments on short circuit condition
Merge pull request #1953 from aparajit-pratap/dynamoCurrent

Changed project config for Excel test framework
Merge pull request #1947 from junmendoza/localkw

Syntax support for local keyword
Do not process dead Elements for watch.
Null checks on Element queries.
resolved conflicts