Version: v0.2.7

7bba376 time: sleep uses apic_timer_sleep
d9731ff apic: add apic timer
5d27384 drivers: function to disable pit
a4e0c30 drivers: function to disable IRQ lines
679e6d3 drivers: use shift+PAGEUP/DOWN keys for VGA scrolling
2ff3af1 drivers: add up/down scrolling thru VGA screens
4a593b2 drivers: buffer multiple VGA screens
80c08fc atomic: basic atomic operations
288ee4f keyboard: interrupt routed through APIC
30a0584 keyboard: 8042 initialization
6e57181 drivers: basic keyboard support
21acd67 IRET asm macro