* [DCG_LIST,NEW] Rewrite. Only dcg_list//2 remains. Added support for options indent and style.
* [UNIVERSE_OF_DISCOURSE,NEW] Added universe/1 that enumerates the universe of discourse plus all relations thereon.
* [UNIVERSE_OF_DISCOURSE,FIX] Various fixes.
* [UNIVERSE_OF_DISCOURSE_PP,NEW] New module, pretty-printing the universe of discourse and the universe.