* [DCG_GENERIC,NEW] Added dcg_multi/3.
* [HTTP_DCG,EXT] Many additions (the main part of chapters 1, 2, and 3 of the specification).
* [MATH_EXT,NEW] Added integers_to_float/3.
* [RFC_1766,NEW] New module implementing the DCG for RFC 1766 on language tags (used by HTTP 1.1).
* [HTTP_DCG,EXT] Implemented quite a bit of the HTTP 1.1 specification as a DCG.