when building the request signature, the body is preemptively converted to a string, which fulfills the expectation for webmock, despite it being a bit of a perf penalty if the request contains a multipart request body, as the body will be fully read to memory
Closes#319
Closes https://github.com/HoneyryderChuck/httpx/issues/65
this had the effect of storing redirect responses and using them solely for inferences on the each chunk block, instead of the final response
Closes#282
when response would be called inside the #each block, the webmock trigger would inject the body before attaching the response object to the request, thereby retriggering #each in a loop
Closes#281
the last line of the payload wasn't being yielded unless the last character of the payload was a newliine. this was overlooked for a time due to stream plugin being built for text/event-stream mime type, which follows that rule, as per what the tests cover.
* Webmock allows users to stub a request using a URI with query
parameters, as a shortcut instead of using `with...`
* The Webmock adapter did not construct a URI that included the
`request.query`, causing stubs that had the same host/path, but
different queries, to return incorrect results
