Start test case which will document & test various metamodel corner cases we discussed today
Continue corner cases testcase
Merge commit '15bbcc26eae0711bf267e629d6bf46dce29c05a1' into metamodel-corner-cases

Conflicts:
	Core/COObject.m
Update TestMetamodelCornerCases.m comments
Merge pull request #9 from etoile/metamodel-corner-cases

Metamodel corner cases