- limit missing headers results set to 100 so that extraction doesn't
excessively block delegation
- wrap checked headers functions in repository struct
- move storage repository to factory, to correspond with event
repository path
- remove unused files
- reformat sql
- remove line breaks in imports
- This reverts commit 4e2536bf421fd9d2c9067d81f30e0f45c6b94fe7.
- Restore timestamped migrations so goose fix can handle ordering
dynamically with plugins also supplying timestamp based migrations