pub const API_MINOR: u32 = 4;Expand description
The integer MINOR of API_VERSION — see there. Bumped from 0 to 1 when params validation
became strict (#34); to 2 with the set_nickname verb + StatusResult.self_nickname (#37);
to 3 when allow/grant strings became STABLE principals — b64u:/eid:/roster names,
never nicknames (#38); to 4 with the set_app_metadata verb + PresencePeer.meta (#39).