Better namespacing of the mixin methods and properties.
Implemented support for cumulative onChange handler declaration in subclasses. Implemented support for derivations for derived properties referencing state properties that have not yet been declared.
Made the name property for declaring tree-inherited state properties optional.
The beginnings of a new mLoc mixin for the localization features of next generation widgets.
Moved the bindings functionality out of the Uize.Widget.mV2 mixin and into a separate Uize.Widget.mBindings so that it can be used without having to take all the new V2 features under development.