simplified and more stable way to determine the state of the fire

keep 18 previous temperature values of the last 3 minutes to compare ...

against the current temperature every 10 seconds instead of comparing
only every 3 minutes, some other changes

put back default configuration values, allow to cancel alerts with keep ...

== true

enabled rule "tooRich" again since in can be useful, but with higher ...

thresholds

disabled rule "tooRich" because it does not seem to be a good idea to ...

give more air when the combustion is rich

removed dir warm_start and added rule warmStart instead, tweaked and ...

simplified rules again, adjusted and added tests

further improved rules, adjusted tests, added test

some more tweaking of rules and adjusted some tests

added fire dir "burning" and "warm_start", initial impl. of rules for ...

warm start, use constants in rules, added assertNull and assertNotNull

initialize prev measurements with current measurements, updated TODO

allow switching to 8 MHz, use bit shift instead of division to calculate ...

time, poll button every 32 ms instead of 16 ms, some other small
improvements, adjusted tests

use enums instead of constants, rename "heating" to "heater"

moved button, beeper and heater pin settings to pins.h, maintain airgate ...

position in rules, added "tooLean" rule, show fire "direction" together
with current measurements

added test for checking definitions before a "release"

added more tests, make all tests static/private

enable all test classes...

adding tests + some minor cleanup and improvements

added/improved/fixed some tests, some related small fixes and ...

improvements

added menu item/display position showing oxygen sensor heater current

adjusted/fixed tests

fixed compiler errors in tests

fixes and improvements for oxygen sensor heating control

two more test for module rules

do not return from main() after test completed, cancel alerts fired ...

during tests

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