Supports the following options:
# callOnAdd: Boolean (Default
Determines if listeners should be called when they are getting added.
True, the listener is guaranteed to be called when it has been added.
False, the listener will not be guarenteed to be called when it has been added (does not prevent it from being called).
see: here for more info
provides a custom event object with the width and height saved in the
See examples for more information