Cpe

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* Fixed 28.
* Some tests marked as xfail until we carify the proper behaviour for
ANY values.

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* Python3 support.
* Using tox for testing Python2.7 and Python3.4.
* Test directory outside of the package.
* Fixed sphinx warnings.
* Fixed problems parsing colons. Thanks to damiengermonville.
* Using a new system for package metadata management.

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* Closed pending issues:
* Fix wildcard matching 6
* fix multiple %01 wildcards 8
* turn CPESet2_3.compare_wfns into a generator 9
* correctly transform not applicable values for edition 11
* Contributing.md file.

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* Using OrderedDict for `_system_and_parts` and `_CPE_VERSIONS`. For force evaluation order. Tests was failing randomly.
* Changed testing tools: tox + pytest + coverage.
* Changed license to LGPLv3.

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* Fixed an issue reported by TauPan. Added cpe.comp as sub-package. https://github.com/galindale/cpe/pull/2. (TauPan)

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New funtionality has not added, only there are small changes:

* Add NEWS.txt file with the updates in the cpe package releases.
* Added issue about language attribute in CPE Names in documentation.
* Changed some files to follow PEP8.
* Fixed language validation method in CPE components with version 2.3.
* Added integration with travis-ci and version badge and Pypi shield/pin images.
* Added option "packages" in setup.py.