While **much** more complex and slower for regular menus, it has advantages:
* Better performance scaling when state count grow
* Prevent most accidental unsupported state colors
* Prevent a big if elseif elseif... switch copy pasted in all item_styles
* Make it easier to register new states
As for the 'bloated' created by this commit, it will be moved when I will
fix issue #12
This is Radical, a new menu implementation for AwesomeWM. It make it easy to abstract look and behavior or various types of menu with object oriented abstractions. While slower, this make it easier to maintain and extend.