Adding a property to the IRichArtifact interface
Merge branch 'dev' of https://github.com/ecologylab/BigSemanticsCSharp into dev
new simpl dll files for fixes yin made. add creative acts collection getter for IRichArtifact.
Merge remote-tracking branch 'origin/dev'
Merge branch 'new_libs'

Conflicts:
	Ecologylab.BigSemantics/MetadataNS/Builtins/RichArtifact.cs
fix bad merge of RichArtifact