What's Changed
- Restructured the model directories & URLs
- Separate Chan's model:
- `--activityModel chan` classifies "sleep", "sedentary", and "other". Then, "other" is split into "light" and "moderate-vigorous" using cutpoints.
- `--activityModel chanw` classifies "sleep", "sedentary", "walking", and "other". Then, "other" split using cutpoints.