Version 0.3 of yos is out and has

• startup code
• vectors and interrupts
• basic code for threads (round robin scheduler)
• basic code for processes
• timers
• synchronization events and thread blocking
• syscalls
• resource accounting
• tty
• ysh (y shell)

Plan for 0.4:

• stabilize processes and threads incl. cleanup functions after exiting
• clipped bitmaps ... I need those for mouse cursor, fonts, icons, bitmaps.