#5 set eventlisteners

[Martin Insulander]

Possibility to add and remove events with set.

realisation.set({
    addEventListener:[
        {'onmouseup':function},
        {'onkeyup':function,'name':name}
    ]
});

When a name is set to the event, the event can be removed.

realisation.set({
    removeEventListener:['name']
});

named event listeners are stored under the realisation.

realisation._events = {}