20275 ----- Issue 6635: Removing class does not remove class tag http://code.google.com/p/pharo/issues/detail?id=6635 Issue 6636: Review over RPackage system integration tests http://code.google.com/p/pharo/issues/detail?id=6636 Issue 6461: [BUG]: Bogus package creation http://code.google.com/p/pharo/issues/detail?id=6461