added tests for rules

adjusted test

back to programmer port /dev/ttyACM3...

experimental implementation of rules to notify about certain conditions ...

during burndown

refactored/renamed module "usart", use own implementation, added test, ...

updated comments, some cleanup

fixed some comments

improved comments, made parameter constant

added ability to set beep tone and a command to test/play with beeps

added tests for module "alert"

updated comments

adjusted test some more

new way of running tests

test new way of running tests

split tests into modules

- use size_t ...

- added tests
- some small improvements

- made function parameters readonly ...

- types with capital first letter
- updated comments and documentation

- one test was not included

- fixed obscure test failure

- use program space for unit test instances instead of data space ...

- "private" variables static
- removed updateDisplay()
- renamed some functions

sorted tests alphabetically (like in Jenkins)

added module strings with split function, added tests

finally updatePending is set at the right time so display is always ...

updated immediately

no need to wait for USART data to be sent with SLEEP_MODE_IDLE instead ...

of SLEEP_MODE_ADC

moved ADC and LCD pin constants to pins.h

uncomment assert

Another Jenkins test

Added comment, adjusted existing tests

- 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

- Other symbols for display options ...

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

Use defined ADC pins in other test as well, some cleanup