uWatch Revisions:

1.0 - First Release

1.1
- Replaced EEPROM I2C routines

1.2
- Fixed bug in RPN plus, minus and X^Y modes

1.3
- Time mode display correctly after coming out of sleep mode
- PI in RPN mode now lifts stack
- RPN stack lift for decimal point first fixed
- ALG stack lift for decimal point first fixed
- negative exponent entry now doesn't override previous entry
- Yreg now displays corrrectly after sleep mode
- Setup mode menu now wraps correctly in backwards direction
- Calc stack is now preserved when changing modes

