Simplify request setup
Make it easy to use a single manager for multiple requests
Use consistent ManagerSettings
Add /gzip support to httpbin
Make the redirect test work against local httpbin
Add an easy way to run tests against a local httpbin

--HG--
extra : amend_source : c72372aebec68f998a0eb63f6cddcf3dbc340da6
Fix test build
Add support for /cookies/set to httpbin