Hey Martin
I don't think Per did more with the project than the videos. But he did upload the source code of the compiler.
Be compiler
https://gist.github.com/pervognsen/3bd8c715953900a3dddbd35d88c4f323
Be sample code
https://gist.github.com/pervognsen/0ef581ec6eabd2c215c6a475749cc88e
More related code is available at page 11-12 from his public gists at:
https://gist.github.com/pervognsen/