Baseline should update more slowly and indicate state.

* The device should indicate when the baseline value has settled.
* The baseline, as-is, may be updating too slowly, causing us to miss some licks in a series of licks. See image below.


It's not clear that this is a baseline issue, but odds are good since it is always adapting. It's worth considering:
* updating the baseline more slowly
* not updating the baseline while we are tripped up to a certain time threshold.