Okonomiyaki

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Enhancements:

* Run tests against Centos 7. (359)

Maintenance:

* Run Travis CI on maintenance and tagged branches. (352)
* Only test branch builds on Appveyor for master and maintenance branches. (364)

Bug fixes:

* Add the license to the manifest. (354)
* Fix platform detection on Centos 7. (161)
* Fix error when '$' is in the Python runtime prefix. (309)

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Bug fixes:

* Fix name of the 2.7.10 dummy runtime for rh6. (341)

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Enhancements:

* Add dummy test runtimes for python 3.6.5. (327)
* Add dummy test runtimes for rh7. (331)
* Add dummy test runtimes for rh6. (330)
* Add dummy test eggs for rh7. (329)
* Add dummy test eggs for rh6. (328)

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Enhancements:

* Add ability to parse setuptools eggs and wheels with metadata version 2.1 (312)

Bug fixes:

* Improve error message when hyphens are used in spec requirement string (319)
* Fix CI errors with jasonschema and attrs incompatibility (318)
* Fix Travis CI flake8 errors (316)

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Bug fixes:

* fix test data dummy runtime for python 2.7.9 that contained osx system files. (304)
* fix test data dummy windows runtimes fix_scripts to support python 2 and python 3. (303)

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Enhancements:

* WheelInfo provides properties for the 'scripts' and 'headers'
prefix scheme. (298)