Clever/understream — pull request #48 by azylman (2013-12-13 01:17:14+00:00)
Title: queue: work around a bug in async

async.queue [releases zalgo](http://blog.izs.me/post/59142742143/designing-apis-for-asynchrony)

going to submit a PR with a test case to async, but I dunno how
responsive he is so we should account for it here as well