updated literalizer, tweaked test output to not include number litera…

…ls (not necessary for let-er)

v0.4.0-a: closes Issue getify#6 -- fixes certain comments (before and…

… after a let-declaration list) being dropped, adjusted some of the annotation comment text, added some test cases

oops, undoing previous commit's change. doh.

fixed bug in array concat usage

tweaked CLI config

v0.3.1-a: fixed a bunch of lexing/parsing bugs around invalid/ignored…

… let-blocks, added test-6 for those cases, corrected all the test result AST .json files to have correct content

v0.3.0-a: fixed several bugs, added 'leter' CLI tool, another test (w…

…ith warnings), updated README

tweaking dependency config

v0.2.0: big reworking, now supports lex/parse/generate as separate st…

…eps, now has tests (for all options)