Added comment, adjusted existing tests

- Use SLEEP_MODE_IDLE instead of SLEEP_MODE_ADC (and ...

loop_until_bit_is_clear(ADCSRA, ADSC)) since it will not corrupt USART
RX/TX data and click the beep
- Use shorter commands to for less typing and memory
- Command to enable/disable logging
- Use atoi() instead of strtol() since it requires less flash and should
be sufficient here

- Set and cancel alerts ...

- Display text
- Receive USART data
- Simulation by sending measurement values via USART
- Added some commands like enabling and disabling simulation
- Some refactoring and renaming of functions
- Comments missing
- Tests missing

- Include min lambda value in max measurements and vice versa ...

- Added timer1 toggling PB1 (beeper) at 1.95 kHz
- Added initial alert module

- Other symbols for display options ...

- Measure and display only every second but update the display
additionally when the menu button was pushed

Refactored to use a timer interrupt polling the button instead of the ...

button triggering an interrupt, replaced the delay by a timer and
separated logging from updating the display

Added a simple "menu" (display options that show min and max ...

measurements since last start/reset) accessible through a pushbutton
triggering an PICINT interrupt. Added two modules "interrupts" and
"display", refactored code and added some tests.

Updated TODO

Removed license, really not necessary for such a project

Improved comment

Removed DIDR todo

DIDR! + tests

- Set ADC clock prescale to 8 (125 kHz at 1 MHz CPU clock) ...

- Let measure() return measurement that can be called to display()
instead of measure() calling display() (for testability)
- Removed semicolons from #defines
- Include stdbool.h and use bool instead of uint8_t
- Added tests
- Some formatting, comments

- Update attribution with module lcdroutines ...

- "Improved" .h files

Added module lcdroutines and implemented LDC

Added descriptions for the module's .h and .c files

- Included the module USART in the project ...

- Added GPL and LGPL licenses
- Added attribution for USART and Makefile
- Updated Makefiles

Added testGetVoltage()

Moved some functions from lambda.c to sensors.c to make them testeable, ...

added a test

- Round up when creating moving average ...

- Added comments and doc

Added integers.h with some functions for working with integers like ...

division and rounding, use rounding to nearest in divisions for more
accuracy

Fixed tests, added comments on rounding

Rounding, fix calculation nonsense

Round up averaged voltages

Use div for integer division and remainder

Removed floats, use int?_t instead of int an long

Added initial test project

Removed unused variable used for testing the warnings plugin

Refactored to use a module

Linearization of tempO using a lookup table and linear interpolation