The first of the big refactors landed this week, with lots of work still in-progress.

• wycats landed a major rewrite of the parser to better handle external/internal as well as more accurate coloring (#728)
• twe4ked and chhetripradeep added docs (#802, #797, #795, #794, #793, #792, #791)
• daveremy for helping out with the contributor book (#4)
• Thanks to pizzafox, empath75, t-hart, ArekMiszcz, jordelver, daveremy, and jankeromnes for filing issues