PackageLoader.TryLoadFrom and ReflectionOnlyTryLoadFrom - helper methods to support safely loading managed assemblies
Clean up comments
Merge remote-tracking branch 'upstream/master' into PMBinaries
Merge pull request #2809 from pboyer/PMBinaries

Special checks to prevent loading un-managed assemblies in Package Manager
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into Revit2015
Merge pull request #2830 from Benglin/Revit2015

Cross merging master changes into Revit 2015