Updated CHANGES.md with METAMODEL-149 information.
Updated CHANGES.md with METAMODEL-149 information.

tomatophantastico/metamodel,kaspersorensen/metamodel,narahari92/metamodel,rafaelgarrote/metamodel,tomaszguzialek/metamodel,ardlema/metamodel,ClaudiaPHI/metamodel,apache/metamodel,LosD/metamodel