whats missing?
-- evbuffer, evhttp, bufferevent are missing.
+- no event-like priority support at the moment (the ev priorities
+ are not yet finished and work differently, but you can use idle watchers
+ to get a similar effect).
-- no priority support at the moment (but likely to be delivered later).
-
-- kqueue, poll (libev currently implements epoll and select).
-
-- windows support (whats windows?).