Upgrading Joyau, the only Ruby interpreter available for the PSP, by its author Kode. This interpreter allows the creation of small 2D games using the Old School Library (OSL), and use many of the original Ruby interpreter functions. This version corrects some bugs in previous releases, integrated some additional libraries, and added a useful screen for debugging.

Changelog:
- Fixed some bugs in previous version
- Added support for some libraries present in ruby stdlib
- Added libraries BigDecimal, digest, fcntl, squeeze, strscan, zlib, enumerator, thread, and NK
- Added debugging screen
- Other minor changes