REL: Starting work on v0.2.1.
BUG: Fixed bug setting random seed with numpy 1.9.0.

Setting the random seed in MCMISER was broken with numpy 1.9.0 (the
unittests failed). This is now fixed.
DOC: Added release notes for v0.2.1.
REL: Version 0.2.1.

Bugfix release.

Fixes a bug with default random seeds when mcmiser was used with numpy 1.9.
Merge pull request #8 from pbugnion/master

Adds a bugfix for mcmiser.