Add Null resilience for AstNodes
Inline case exception behaviour to shortcut having to throw and immediately catch the exception. This is a very hot path when the system is in error state
Factor connectors into an intermediary variable to make inspecting its value easier during debugging
Addition of basic mutation test functionality and factor CrashPromptArgs into separate class

This is work in progress separation that I need to do to reset before moving into a branch and starting to fix the race conditions that the tool is revealing.
Update README.md
Reproduction case for MAGN-3551

http://adsk-oss.myjetbrains.com/youtrack/issue/MAGN-3551
Merge branch 'master' of https://github.com/DynamoDS/Dynamo
Associate SSA graphnodes to their final assignment graphnode at codegen

1. Move SSA graphnode association at codegen
2. Remove this functionality from the runtime
Merge pull request #1688 from junmendoza/newMaster

Associate SSA graphnodes to their final assignment graphnode at codegen
Repro for MAGN-3576
Test fixes
Extend Floor to take PolyCurve input
Merge branch 'master' of https://github.com/DynamoDS/Dynamo
Add DynamoLauncher project

Adds a program that allows drag and drop launch of Dynamo on top of
Revit. Adds the ability in DynamoRevit to run a file that is passed from
the journal data.
Add debugger attachment.
MAGN-3489

Fix element query to correctly compare family types.
MAGN-3488

Add ForceReexecute to DSElementSelection to ensure that element
selection nodes reexecute on model changes.
Fix SanityCheck test.
Fix Revit core lacing test.
Updated LibG DLLs to fix MAGN-3548