Domain-utils

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Fix building on readthedocs.

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Thanks to new contributor yabirgb for two PRs (20 and 25) in this release.

API changes: 26 renamed `get_stripped_url` to `stem_url`, and `get_ps_plus_1`
to `get_etld1`. Old method names will continue to work though. 22 updated
keyword arguments to `get_stripped_url` - default behavior is basically the same.

* API changes (26 and 22)
* Support parsing ws/wss urls (22)
* Add get_port method (25)
* Add get_scheme method (20)
* Correct license declaration in setup.py (24)

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* Use tldextract for parsing domains (12)
* Use numpy style docstrings
* Support case of no scheme and port in URL (13)

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* Remove support for python 3.5
* Handle more cases in get_stripped_url and change default behavior:

- handle a lack of scheme
- boolean flag to return or not non http urls - default is to
return them which is a change of behavior as previously they
would not return
- Use netloc by default instead of hostname with a boolean flag
to use hostname.

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* Remove py27 support

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* Restore py27 support.
* Last version with py27 support.
* Remove tox