before_hooks 0.1.1

Adds `before_extended`, `before_included`, and `before_prepended` methods hooks which would be called before the standard `extended`, `included`, and `prepended` Ruby hooks, respectively. Especially useful when you require to "do" something just before the module gets `extended` or `included` to a module/class. In particular, in my specific case, I needed to "do" something if a specific method already exists in the `base` class.