v0.0.7: kernel-space TTY shell (kshell)

v0.0.6: FAT32 filesystem, file descriptors, and file I/O syscalls

Release v0.0.5

- Fix heap addresses in documentation and clean up APIC/IDT code
- Fix SYS_READ blocking behavior and add framebuffer output to SYS_WRITE
- Add keyboard interrupt handler with PS/2 controller initialization
- Fix TTY newline, backspace, and character rendering in graphics subsystem
- Move kernel heap to higher half address space for better memory layout

Phase 2 release

Alpha 3

Alpha 2

Alpha 1