Responses

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- Packaging fix to distribute wheel (219)

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- Fix passing through extra settings (207)
- Fix collections.abc warning on Python 3.7 (215)
- Use 'biscuits' library instead of 'cookies' on Python 3.4+ (218)

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- Support for Python 3.7 (196)
- Support streaming responses for BaseResponse (192)
- Support custom patch targets for mock (189)
- Fix unicode support for passthru urls (178)
- Fix support for unicode in domain names and tlds (177)

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- Added the ability to passthru real requests via ``add_passthru()``
and ``passthru_prefixes`` configurations.

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- Responses will now be rotated until the final match is hit, and
then persist using that response (GH-171).

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- Fixed call counting with exceptions (GH-163).
- Fixed behavior with arbitrary status codes (GH-164).
- Fixed handling of multiple responses with the same match (GH-165).
- Fixed default path behavior with ``match_querystring`` (GH-166).