What's Changed
* New Chan's activity classification model: Pass `--activityModel chan` to use. The model classifies "sleep", "sedentary" and "other" activities. "other" is then further split based on simple ENMO cutpoints:
* "other" & <100mg = "light"
* "other" & >=100mg = "moderate-vigorous"
* Simple heuristic to smooth sleep outputs to reduce spurious false positive sleep bouts. Currently only applies to Chan's model.
* Cleanups 024e656fa372fffdbc4eeea5f55017446f8acb37