Improvment key event detection: In previous version the evaluation of a button event was called in the 100ms callback. Assuming an event is signaled at the in line for 100ms there is a potential risk to loose a button event. To avoid this scenarion the evaluation function was moved into the extint callback (called ~50+xms) and the line readback tim was reduced to 40ms. Reminder: This function is not called in the main loop because the main loop is not executed in UART mode => movement would cause key events to not beeing detected

1b9be6040d8279117c7fc99d528790611638f10b V1.4.7 release
ba9d99a2e310da601a948ff11ad665260c600e18 v1.4.8 release
143fe85f82a2e2aca50eb0c29bc55066cb4fe497 v1.5.0 release
afa55a50cc724b11b959fa81567d59ede251ef22 v1.5.1 release
54a480c43e977db8fc6969551ad6148f2ad46e15 v1.5.2.beta release
5b4c78c36b0456ff65d1a0870d07d4072045480d v1.5.3 release
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02e7e11fdbe8c12fdd250074b97db921ef9f1164 1.5.5 release
06ec1da5e1055b39b71bb7e0114ecfdd4f958959 v1.5.6 release