Add change detection on @Setter

[lmonkiewicz]

It would be really usefull if @Setter could create setters that return true/false when property value was changed or not.

Something like this:

public boolean setValue(String value){
    boolean changed = !Objects.equals(this.value, value);
    if (changed){
        this.value = value;
    }
    return changed;
}

[marcelhaerle]

I think this is a reasonable suggestion. I would implement this as an optional annotation field, maybe boolean returnHasChanged() default false.