iris.one/self.one

[surtich]

I think it would be a good idea that Iris had self.one/iris.one methods that behave similarly to how JQuery one method does.

This would avoid omissions and simplify subscription to events in which we are interested in their first occurrence.

I think it would be easy to do. Something like this:

    iris.one = function(p_eventName, f_func) {
        function f () {
            f_func(arguments);
            iris.off(p_eventName,f);
        }
        iris.on(p_eventName,f);
    };

Perhaps the tricky part is to reimplement the iris.off method.