Vocabularic pedantry: s/it's/its/

Signed-off-by: Reid Draper <reiddraper@gmail.com>
Create generators/for macro

This commit adds a generator macro that mimics the syntax of
clojure.core/for and covers all of the functionality of bind, fmap,
and such-that.
Merge branch 'TCHECK-15' into fork
Patch version bump