This introduces BaseComponentView, which is a Spina base class that

makes it easy to write components. It subclasses BaseView and provides

formal support for:


Capturing initial construction state (options, whether a component

   was instantiated via crafting, and storage of children and

   subcomponents).


Rendering management that tears down the initial state post-render.


Utilities for storing subcomponent children when crafting (though

   this is subject to change in the future).


All Ink components will derive from this class.

Unit tests pass.
Made use of this in the development of new components.