Added document to track components used in PBS that could affect controller code.
Lots of code cleanup, mostly cosmetic.
1. Added test for no bottle present when pressurization starts
2. Fixed two-button purge routine
1. Added Idle loop to track pressure in real time
2. Added Emergency Depressurize Loop in case door opens when bottle is being pressurized
3. Added spreadsheet with version control and configuration control data
1. Recalibrated pressure sensor and changed pressureDeltaUp from 50 to 10;
2. Added idle main loop pressure check;
3. No longer repressurizes before resuming filling when filling was stopped by toggling B2;
4. Fixed issue where door open w/ platform down also triggered platform down solenoid momentarily.
1. Changed pressureNull from 500 back to 450. This caused big problems that I don't understand.
2. Added initialization routine for show