curl tool limitations
---------------------
-The command line tool won't do any HTTP/2 multiplexing even though libcurl
-supports it, simply because the curl tool is not written to take advantage of
-the libcurl API that's necessary for this (the multi interface). We have an
-outstanding TODO item for this and **you** can help us make it happen.
-
The command line tool also doesn't support HTTP/2 server push for the same
reason it doesn't do multiplexing: it needs to use the multi interface for
that so that multiplexing is supported.