* [API_KEYS,NEW] New module for storing API keys per service, organization, and user.
* [CKAN,NEW] Added several queries. Rewrote some of the architecture underneath the specific queries (only POST requests with JSON data now, so not GET requests with query parameters in the URL anymore; parameters for queries are now normal Prolog arguments, no longer options in a name-value list; default calues for parameters are now used, as well as inter-dependencies between parameters; big improvements in documentation).
* [DCG_GENERIC,FIX] Since the empty list is atomic as well, we need separate clauses for atoms and numbers in dcg_phrase/3.