A render optimization algorithm for refreshing the UI via props tunnelling (setting new props on a component's
state in a pre-agreed location). This algorithm analyzes database changes and on-screen components to update
components (by ident) whose props have changed.

Prop change detection is done by scanning the database in *only* the locations that on-screen components are querying
(derived by the mounted component idents, and any ident-joins in the queries).

The keyframe optimized render.

Just like keyframe render, but supports `:only-refresh` option.