- `readJson()` now just checks for the file extension to decide whether to uncompress instead of taking a flag.
- moved migration logic from index.js to analysis.js:migrateToGzip
- fixed `restore()` in analysis.js
- also calling `migrateToGzip()` in replay.js
- Fix billa canonicalization for Dossier data
- Fix spar canonicalization for Dossier data and data from 2022.