Manypex

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* Fix bdist_pex interpreter cache directory. (286)
`286 <https://github.com/pantsbuild/pex/pull/286>`_

* Normalize and edify subprocess execution. (255)
`255 <https://github.com/pantsbuild/pex/pull/255>`_

* Don't ignore exit codes when using setuptools entry points. (280)
`280 <https://github.com/pantsbuild/pex/pull/280>`_
`Fixes 137 <https://github.com/pantsbuild/pex/issues/137>`_

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* Update cache dir when bdist_pex.run is called directly.
`278 <https://github.com/pantsbuild/pex/pull/278>`_
`Fixes 274 <https://github.com/pantsbuild/pex/issues/274>`_

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* Improve failure modes for os.rename() as used in distribution caching.
`271 <https://github.com/pantsbuild/pex/pull/271>`_
`Fixes 265 <https://github.com/pantsbuild/pex/issues/265>`_

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* Bugfix: Open setup.py in binary mode.
`264 <https://github.com/pantsbuild/pex/pull/264>`_
`Fixes 263 <https://github.com/pantsbuild/pex/issues/263>`_

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* Bugfix: Repair a regression in `--disable-cache`.
`261 <https://github.com/pantsbuild/pex/pull/261>`_
`Fixes 260 <https://github.com/pantsbuild/pex/issues/260>`_

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* Add README and supported python versions to PyPI description.
`258 <https://github.com/pantsbuild/pex/pull/258>`_

* Use `open` with utf-8 support.
`231 <https://github.com/pantsbuild/pex/pull/231>`_

* Add `--pex-root` option.
`206 <https://github.com/pantsbuild/pex/pull/206>`_