Integrate slick-pg
Use slick-pg search extension for books
Use slick-pg search extension for authors
Move author creation logic into the service
Move book creation logic into the service
Move db package under services
Validate existence of book GUID before creating edition
Add page count validation to edition creation
Use 'page number' not 'page' for notes
Validate page number on note creation
Store audit data for acount GUIDs