Support `SETUPTOOLS_VERSION` and `PIP_VERSION` to allow installing specific version of setuptools/pip (#202)
v20140705 (fixes #204)
Display the package name of `hg` as `mercurial` in message (#212)
Fix zsh completion with multiple words

`${words[2,-2]}` must not be quoted, otherwise completion for multiple
words (e.g. `shell 3.4.1`) fails.
Unset `PIP_REQUIRE_VENV` during build (fixes #216)
Merge pull request #215 from blueyed/fix-zsh-completion

Fix zsh completion with multiple words
Set MACOSX_DEPLOYMENT_TARGET from the product version of OS X (#219, #220)
Fix broken tests
Add tests for MACOSX_DEPLOYMENT_TARGET (#219, #220)
Setup configure options to build against universal SDK on Darwin
Merge pull request #222 from yyuu/macosx-deployment-target

Setting MACOSX_DEPLOYMENT_TARGET on Darwin