Get second example working (template strings).
Break out Upwardable as a separate entity in Upw/Upw.js.

Change directory structure to put utils in src/Utl and upward-related things in src/Upw.
Redefine 'computables' as 'upwardable function' and 'upwardable' as 'upwardable object'.
Rename basic features, such as UpText for TEXT and UpCount for COUNT.
Provide a single source of imports in src/Up.js.
Provide polymorphic Up operator for upwarding functions, objects, and template strings.
Delete obsolete files, mainly old array manipulators.
Get first two examples working with this new structure.