Handle backspace and \r
Add averaging over conductivity measurements
Average filter dumped conductivity values
Use period for conductivity measurement
Add sensor infrastructure
Add adc sensor queue

ADC access needs to be serialized
Ensure we don't schedule blink timeout twice
Fix push_sample
acquire: Only increment sample_idx on success
Expand sensor_id field to uint16_t
Refactor out usb console
Add -Werror and use default stdio outbuf size