Expose utility to inform atlas construction.

Ensure units are converted correctly between CatTrap & Balkon.

Integrate inline layout!

Finish implementing preprocessing/CSS parsing & integrating everything with test script.

Draft grid preprocessor which sucessfully compiles.

Unittest & fix abstract layout.

Test & fix block layout.

Draft new CatTrap API which hopefully is easier to implement.

Unit test calc() implementation!

Draft public API for CatTrap.