Abstract HTTP request.
Support sending a payload.
Support more methods.
Align.
Improve error messages on bad arguments.
Define protocol in its own module.
s/hostname/domain/g
Abstract URI.
Rename module from Httpc to Http_client.
Abstract HTTP method.
Relocate example from bin to examples directory.
Rename example from ocaml_httpc_test to http_client_example.
Add header comment with sources of URI definition.