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_matcherorresponses.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. See Issue #212