A pure-Python implementation of the HTTP/2 priority tree
Description
A HTTP/2 Priority Implementation Priority is a pure-Python
implementation of the priority logic for HTTP/2, set out in RFC 7540 Section
5.3 (Stream Priority)_. This logic allows for clients to express a preference
for how the server allocates its (limited) resources to the many outstanding
HTTP requests that may be running over a single HTTP/2 connection.
