Revised some commentary.

I had an idea to try and merge the lexer and the parser.  It is, after
all, a PEG-generated lexer, and PEGs are supposed to generate parsers,
right?  But the elegance of the separation at this point is so nice and
straightforward that I don't think I win anything by merging them.

src/parser.coffee

@@ -79,6 +79,7 @@ class Contexter
         else
             ""
 
+# This is really the compiler at this point...
 
 module.exports = (ast, data) ->
     context = new Contexter(data)