Added unit tests for configuration initialization, parameterized the configuration initialization such that now XML code can be passed on directly (without altering the XML file, the test can now be performed)
Corrected handling of OBD messages, unit tests.
Init button removed, PID request button rewired to 'get results from earlier requests'
Added tests, corrected the 'newline' behavior (it literally sent "\r" instead of the carriage return)