docs: clarify Api version method priority; payload @apiver Define how version is determined when multiple conflicting methods are used. Add doc on use of @apiver in data payload for PUT/POST (and maybe PATCH). Now that this is defined, sent email to devel list to see if the order should be changed. The url parameter is the lowest priorty setting and will be ignored if any of the 3 higher priority methods are used. However using the url setting is the easiest for testing.