- Warning when indexes overlap (data add or update)
- Data integrity on update (create temporary file with new data, rename old data file, move temporary file, remove old data file)
- Handle errors (such as permissions) in an explicit way
- Grooming (create a consistent and convenient API, comments)
- Improve data search
- Check for TODOs
- Check types.
- Switch to CBOR format.
- Verify uniqueness before adding data.
- Allow indexes to be NIL.