Scpclient

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* Remove hack for changing the RPM name (issue 10).
* No code changes.

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* Fixed issue 8, Support building wheels.
* No code changes.

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* Fixed issue 5, Not all files included in sdist.
* Fixed issue 6, Rename bdist RPM to python-scpclient.
* No code changes.

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* Fixed issue 2, Missing contextlib import. Thanks Olivier CARRERE.

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* Improved documentation, including how to create a paramiko
connection.

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* Removed useless tests.
* Fixed embarassing last minute typo which broke the code.
* Included trivial examples in README.txt. Needs much work.
* Forbid files that contain '..' in the filename. This is an attempt
to prevent path traversal. This approach is simplistic, but it's a
reasonable first step and gets the job done.