Update list of valid release types and valid search fields.

Signed-off-by: Ian McEwen <ianmcorvidae@ianmcorvidae.net>
Add support for areas, places, link type UUIDs, and URL MBIDs.

Signed-off-by: Ian McEwen <ianmcorvidae@ianmcorvidae.net>
Use TAG_INCLUDES and RATING_INCLUDES consistently, update docs and CHANGES file.

Signed-off-by: Ian McEwen <ianmcorvidae@ianmcorvidae.net>
Merge branch 'areas-and-places'

see pull request #132