jmoiron plays the blues

5f2186d6 to jigo continue to pull parts of the text/template parser, discarding things like treeMap, funcs, and vars which dont apply to jinja
3d592716 to jigo add ast and parse.go stubs based on text/template parsing
c461e112 to jigo add lots more tests, clean up tests a bit with tn and tt shortcuts, report delim balancing errors in the lexer, fix a potential issue where delims clash with the block delims
d8eb6b4b to jigo lexing names, bools, many arithmetic tokens
bc6eaa20 to jigo comment lexer, close token stream when it's done to make tests a bit easier
88cd6d64 to jigo add jigo/neo, a second go at jigo, with some expression docs, lexer code nearly identical to text/template, token set identical to jinja2