hylang/hy — pull request #122 by jd (2013-04-15 00:51:15+00:00)
Title: Remove `pass' from the language.

This also fixes a bug in the pass optimize missing branch where the code is
something like: [stmt, [], stmt]; in such case we want to filter out [], so if
we end up with [] we can optimize it. This fix is needed otherwise (do) inside
(do) are not properly optimized.