Event.register

Register a function on this event
Functions are run in registration order
An optional string argument can be given, grouping functions under that name, for an easier management later on

overload 1:
                        
Event:register(func)  
 Method Property Fluent Description Representation
func accepts a function Function 
   
Return Value an Event Event 
   
overload 2:
                        
Event:register(func, name)  
 Method Property Fluent Description Representation
func accepts a function Function 
   
name accepts a String String 
   
Return Value an Event Event