- stacktrace in .../author/52740ec2208be5d72d73ca85fb82dd6c/sequenceless
- exists, many
- cyrillic letters 'ё' and 'е' must be treat as same in ids generation
- up speed in /author/.../sequenceless request
- create/fill new database in new filename and move it in new command './managedb.py commit'
- refactor it! some functions not in right place, some need to be deleted, may be split some submodules.