Marca-hypertext-highlight

Code highlighting for Marca-hypertext based on highlight.js.

I am too lazy to explain hows and whys.

TODO

• splitElem() with begin and end;
• make line splitting optional?
• overlapping markup is painful... what to do?
• allow interfacing with other highlighters/parsers;
• use Marca as highlighters/parsers output rather than HTML?
• otherwise implement full list of HTML entities decoding?
• allow non-span elements in HTML output?
• browserification;
• more DRY;
• API review;
• documentation;
• tests.