Braingeneers-smart-open

- Fix author/maintainer fields in `setup.py`, avoid bug from `setuptools==39.0.0` and add workaround for `botocore` and `python==3.3`. Fix 176 (PR [178](https://github.com/RaRe-Technologies/smart_open/pull/178) & [#177](https://github.com/RaRe-Technologies/smart_open/pull/177), [menshikh-iv](https://github.com/menshikh-iv) & [baldwindc](https://github.com/baldwindc))

- Improve S3 read performance. Fix 152 (PR [157](https://github.com/RaRe-Technologies/smart_open/pull/157), [mpenkov](https://github.com/mpenkov))
- Add integration testing + benchmark with real S3. Partial fix 151, 156 (PR [158](https://github.com/RaRe-Technologies/smart_open/pull/158), [menshikh-iv](https://github.com/menshikh-iv) & [mpenkov](https://github.com/mpenkov))
- Disable integration testing if secure vars isn't defined (PR [157](https://github.com/RaRe-Technologies/smart_open/pull/158), [menshikh-iv](https://github.com/menshikh-iv))

- Fix problems from 1.5.4 release. Fix 153, 154 , partial fix 152 (PR [155](https://github.com/RaRe-Technologies/smart_open/pull/155), [mpenkov](https://github.com/mpenkov))

- Add naitive .gz support for HDFS (PR [128](https://github.com/RaRe-Technologies/smart_open/pull/128), [yupbank](https://github.com/yupbank))
- Drop python2.6 support + fix style (PR [137](https://github.com/RaRe-Technologies/smart_open/pull/137), [menshikh-iv](https://github.com/menshikh-iv))
- Create separate compression-specific layer. Fix [91](https://github.com/RaRe-Technologies/smart_open/issues/91) (PR [#131](https://github.com/RaRe-Technologies/smart_open/pull/131), [mpenkov](https://github.com/mpenkov))
- Fix ResourceWarnings + replace deprecated assertEquals (PR [140](https://github.com/RaRe-Technologies/smart_open/pull/140), [horpto](https://github.com/horpto))
- Add encoding parameter to smart_open. Fix [142](https://github.com/RaRe-Technologies/smart_open/issues/142) (PR [#143](https://github.com/RaRe-Technologies/smart_open/pull/143), [mpenkov](https://github.com/mpenkov))
- Add encoding tests for readers. Fix [145](https://github.com/RaRe-Technologies/smart_open/issues/145), partial fix [#146](https://github.com/RaRe-Technologies/smart_open/issues/146) (PR [#147](https://github.com/RaRe-Technologies/smart_open/pull/147), [mpenkov](https://github.com/mpenkov))
- Fix file mode for updating case (PR [150](https://github.com/RaRe-Technologies/smart_open/pull/150), [menshikh-iv](https://github.com/menshikh-iv))

- Remove GET parameters from url. Fix 120 (PR 121, mcrowson)

- Enable compressed formats over http. Avoid filehandle leak. Fix 109 and 110. (PR 112, robottwo )
- Make possible to change number of retries (PR 102, shaform)