* Add a clean method to check if the flash is done correctly or not.
* Note that this partially reverts 48b9097 due to the bash shell use instead of legacy sh shell
(this is for the use of colors in the check report)
Change to more generic /bin/sh script
* added support for using on shells that don't have UID variable; uses UID if it's available and calls "id -u" when it's not
* modified quoting as recommended by shellcheck
* changed to not use "$?" to check for failure. Now uses "if ! (command); then (fail condition); fi" for when a command fails
Miwer commented in issue #11 that on Mint 17.3 lsblk does not escape
potentially unsafe characters like it does on Fedora (lsblk v2.32.1). So
broaden the grep match expression to catch both posibilities.
Settings menu works
Movement working & TMP calibrated
Tip reading sensibily
Accuracy seems ok
Trimmed down overshoot by biasing integral
Saving to flash working, detailed idle
Sleep mode
Description scrolls
Building for DFU working
Motion detection update
Use manual alg instead, using highpass filter, then sum current change vs rolling average
Re-shuffle the pwm code organisation
