Redirect Implementation is Inconsistent With OS Behavior

[paudav]

I haven't mapped out every scenario, but at least in the case of 307 and 308 redirects, Nocilla doesn't preserve the original request verb or body in the newly created redirect request.

This is inconsistent with OS behavior, and requires a developer wishing to test redirects to compensate with custom redirect following logic in their connection delegate.

I'm also not sure what happens when the responding server replies with a redirect status code but does not include a "Location" header. In Nocilla, this results in a crash (#120), which is probably also not how the OS behaves. 😄