Added requirements.txt
Created base project skeleton
Added sqlite db to the .gitignore
Changed orm from flask-sqlalchemy to sqlalchemy-declarative
Made migration for the User table
Deleted last migration
Fixed migrations
Little gitignore fix
Added abstractions for User table
Added base authentication/autorization tools
Added username validation when registering new user
Made e-mail field required while registration
Created base abstractions for book and author model
Added backref from authors to books
Added foreign keys to user_id for books and authors
Small alembic fixes
Added books and authors abstractions
Added base books/authors tools
Added comfortable links
Fixed redirections after adding book/author