* [DCG_META,NEW] Added '*'//[1-6] RE emulator.
* [DCG_META,NEW] Added '+'//[1-6] RE emulator.
* [DCG_META,NEW] Added '?'//1 RE emulator.
* [DCG_META,NEW] Added 'm*n'//[3-8] based on ABNF construct from RFCs.
  This also underlies '*'//[1-6], '+'//[1-6], and '?'//1.
* [DCG_META,EXT] Added dcg_maplist//[4-6].
* [DCG_META,NEW] Added dcg_once//1.
* [DCG_META,SC] Removed the old dcg_repeat//2. Functionality now provided by 'm*n'//3.
* [DCG_META,NEW] Added dcg_repeat//0.