calling named operation on launchpad.me

Calling launchpad.me.join(team=foo) does not work since a POST to /people/+me gets redirected to the canonical url /~person and according to the http specification a POST that gets a redirect should not be re-posted at the new url without user confirmation. This is very confusing, since you just get back a dictionary directly converted from the json.

If I was manually creating HTTP requests, it would be very clear that I was getting a redirect. launchpadlib hides this and makes a GET request on the new url. At the very least, launchpadlib should raise an exception. Since launchpadlib is bound to a specific api on top of lazr.restfulclient, I think it would make sense for it to re-post the named operation on the new url. Also, in the case of launchpad.me, it would be nice if it didn't re-request the object every time it is accessed, since it should know that launchpad.me won't point to another person unless the login changes.