- Provide a method to reopen the database environment if closed.
- Add #keys, which returns an array of keys for the current collection.
- Finish collection/namespace implementation.
- Add various aliases (collection->namespace, etc)
- Add #clear, which destroys data for a the current collection.
If called in the main db, destroys all. Don't close the environment
after a #clear, just the dbi handle.
- Various bugfixes.
FossilOrigin-Name: 8b00d59e8c5269266f3c6c0d10056a1c0fe1bb583ffbe099a6ed0dac3baf3a66
