Use Clojure data structures for key maps.
Convert rendered objects to entities.
Create graphics, input, and renderers modules.
Create components module and worlds directory for entity lists and entity list generation.
Replace dofs with doseq.
Add color component.
Implement render layers and gravity.
Fix collision detection.
Fix location of phys module.
Modify script include for production build.
Change background color for gh-pages.
Compile for gh-pages.