Version 0.22, released 2012-06-18

Version 0.21, released 2011-10-04

Version 0.20, released 2011-11-03

Version 0.11, released 2011-10-03

Version 0.10, released 2011-10-03

Version 0.04, released 2011-08-15

Version 0.03 released 2011-08-10

Version 0.02, released 2011-08-09.

(Just adds some tests.  I was waiting to do this before releasing 0.01, but was
busy, so decided to just get 0.01 out there.  Then I felt bad about releasing it
without any tests, so decided I should whip up some basic tests and get 0.02
out.)

Version 0.01, released 2011-08-09.