All widget's name should start with "MD"?
Currently, some widgets start with "MD" (for example "MDRaisedButton", "MDCard"), while some other widgets not (for example "Toolbar", "NavigationLayout"). This really confuses the users and potentially causes name-conflict because in kv-lang all widgets are in a same namespace.
So to avoid that, I think the name of every widgets in KivyMD should start with "MD". What do you think?