prepare 0.5 release

Prepare performance 0.4.0 release

prepare 0.3.2 release

Update changelog

update README and TODO

prepare release 0.2.2

Fix --inherit-environ

* Update perf to 0.7.8
* Prepare release 0.2.1

Prepare release 0.2

* Set version to 0.2 (strip dev suffix)
* set release date
* MANIFEST.in: add TODO.rst

prepare release 0.1.2

release 0.1.1