I'm the original author (not OP), and I'm quite surprised that the project was starred by so many people in github and discussed in HN. The project was originally hosted in Google Code, and I decided to migrate to github last night.
As many of your have already commented: the project is only at very very initial stage, with an assembler written in Common Lisp, and a 16 bit bootloader. Currently I can only describe it as a toy.