|Subject:||please add possibility to manipulate watcher priority|
This is quite important for programs that have a lot of io watchers to separate important channels from usual/background connection. Right now if there are pending io on hundred background watchers then new signal on control channel will be processed last. This introduce huge lag in time important messaging. All C event backends have priority for watchers. I'm not sure about current pure perl event loop implementation. But, anyway, this must be not so hard to introduce new feature.