added http2 client python bindings
working, in non-TLS mode
working on SSL!
small cleanup
add pushes
fixed issues with the parameters of send_request
added lots of debugging output
push is working
proper handling of remote_address and closing of the client
changed the client function a bit
moved import to the try block for asyncio
removed commented code and cleaned up comments in general
removed instances of trailing whitespace
change send_request method to not store request headers in the handler.
add check to on_headers_callback to filter out request headers.