* [FIX] Standalone script would not assert non-existing Data subdir correctly.
* [CKAN_LICENSES,FIX] Identity symmetry error.
* [DATAHUB_IO,FIX] Removed my API key :-P
* [JSON_TO_RDF,FIX] XSD assertion at the literal level now.
* [XSD_CLEAN,NEW] Added pl_to_xsd_value/3 for mapping Prolog values to XSD.
* [XSD_BOOLEAN,FIX] Added determinism for canonical map.