Replace --no-progress with --quiet
Make sure all flags output appropriately
Print message when adding/ignoring files in verbose mode
Merge pull request #41 from eapache/consistent-output

Consistent output
Update changelog
Rename function returning bool to end with ?
Substantially simplify DB update path

Fixes #38
Improve output
Update CHANGELOG
Merge pull request #42 from eapache/clean-up-db

Clean up db
factor read_db out of db.load
Support reading uncompressed databases