Don't need to read-level off the page.
Moving stuff around.
Use :floor to determine covered cells.
transform-level simplification
Use floor for legal-transformation?
Change walls to empty space in floor.
clj land strings are not chars.
Add ?oE into 1a and 1b.
Must start with boulder or player.
Remove trace and add todo.
Use floor to determine diagonal room.
Merge branch 'covered-cell' into dev