Log Message:
py-responses: updated to 0.17.0

0.17.0
------
* This release is the last to support Python 2.7.
* Fixed issue when `response.iter_content` when `chunk_size=None` entered \ 
infinite loop
* Fixed issue when `passthru_prefixes` persisted across tests.
  Now `add_passthru` is valid only within a context manager or for a single \ 
function and
  cleared on exit
* Deprecate `match_querystring` argument in `Response` and `CallbackResponse`.
  Use `responses.matchers.query_param_matcher` or \ 
`responses.matchers.query_string_matcher`
* Added support for non-UTF-8 bytes in `responses.matchers.multipart_matcher`
* Added `responses.registries`. Now user can create custom registries to
  manipulate the order of responses in the match algorithm
  `responses.activate(registry=CustomRegistry)`
* Fixed issue with response match when requests were performed between adding \ 
responses with
  same URL.