Log Message:
py-httpx: updated to 0.17.0

0.17.0

Added

Add httpx.MockTransport(), allowing to mock out a transport using pre-determined \ 
responses.
Add httpx.HTTPTransport() and httpx.AsyncHTTPTransport() default transports.
Add mount API support, using httpx.Client(mounts=...).
Add chunk_size parameter to iter_raw(), iter_bytes(), iter_text().
Add keepalive_expiry parameter to httpx.Limits() configuration.
Add repr to httpx.Cookies to display available cookies.
Add support for params=<tuple> (previously only params=<list> was \ 
supported).

Fixed

Add missing raw_path to ASGI scope.
Tweak create_ssl_context defaults to use trust_env=True.
Properly URL-escape WSGI PATH_INFO.
Properly set default ports in WSGI transport.
Properly encode slashes when using base_url.
Properly map exceptions in request.aclose().