* [ROW_EXT,SC] Added rows_to_resources/2, coming from SPARQL_EXT.
* [SPARQL_API,SC] Added sparql_update/3, extracted from project LWM.
* [SPARQL_EXT,SC] Cleanup of this module, e.g. reuse ROW_EXT more.
* [TYPECHECK,FIX] Declare has_type/2 multifile.