* [DCG_CONTENT,SC] Removed arrow//1 wrapper.
* [DCG_CONTENT,FIX] Make bracketed//2 deterministic.
* [SPARQL_BUILD,NEW] Added UNION support to SPARQL query constructor.
* [SPARQL_DB,EXT] Added eu and fr SPARQL remotes for DBpedia.
* [XML_DOM,SC] Removed unused XML namespaces.