Pretty geeky/administrative stuff, and probably of limited value to most of the tacticians here, but when a aspect of vocabulary development actually makes me laugh out loud I can't resist sharing.
Love the new class and property names . :)
From Richard (emphasis mine):
Introduced special extension 'attic' which by default does not appear unless explicitly addressed.
The attic area is an archive area for terms which are no longer part of the core vocabulary or its extensions. Attic terms are preserved here to satisfy previous links to them.
Implementors and publishers are cautioned not to use terms in the attic area.
Note: This PR contains two terms StupidType & stupidProperty to test the functionally. These will need to be replaced with real terms before release by real term(s)