Implement property prioritization & shorthands.

Describe remaining submodules.

Reference-document generic layout/tree-traversal, seperate natural from final size fields.

Decided against adding invisible length-lowering into CatTrap, Mondrian's would be too sophisticated!

Reference-document rest of CSS implementation, disable table-related values of CSS display as unsupported.

Integrate paragraph pagination via Balkon.

Parse text-pagination properties.

Merge branch 'main' of git.argonaut-constellation.org:~alcinnz/CatTrap

Restrict main CSS APIs.

Rename Graphics.Layout.CSS.Internal to Length

Fix imports for abstracted CSS API.

Switch inline nodes to inherit from parent rather than use default values.

Fix inlines getting prematurely cut off.

Revert false-fix skipping inline layout if empty, set display: inline upon inherit.

Fix for mixed-child elements on stripping out extraneous whitespace.

Strip out extraneous whitespace.

Repair logic for determining whether elements are inline.

Add support for display: none;

Finish refactor allowing for runs of inlines to be captured & passed to Balkon.

Correct `display: initial` to being `inline` rather than `block`.