The update to dgeni-packages led to a breaking change in the Nunjucks
templates, where macros are now isolated from their calling site.
This means that we must pass the `versionInfo` object through to the
macro rather than expecting it to be in scope already.
The createDecoratorDocs processor identifies docs of exports that actually
represent decorators and get useful information for them.
This commit also set up the rest of the generation to display these new
decorator docs with their own template and updates the API list so that
we can filter the docs by decorator docType.
Peter Bacon Darwin
Eric Jimenez
Eric Jimenez