Cleaned up environment.
Updated gitignore & windows hates us.
Merge branch 'sucker'
Yay changes.
Code cleanup.
Bugfixes. Fixed Sound, added LED.
Cleanup.
Cleanup of trailing whitespace.
Keypad architecture reworked. Minor LED changes.
Triaged keypad Heisenbug. Added keypad ID to Q.
Reverted LED timer to 10H ticks.
Removed Dropbox droppings from .gitignore.
Commented out debug code.
Added variable for mode.
implemented update_display
Implemented rudimentary transaction support.
Bugfix: syntax errors.
Merge branch 'master' into work

Conflicts:
	timer.asm
Partial work on transaction is done.
implement query_temp