3.0.0

Breaking API change on lintmigrations command:

• the positional argument GIT_COMMIT_ID becomes an optional argument with the named parameter --git-commit-id [GIT_COMMIT_ID]
• the lintmigrations command takes now two positional arguments: lintmigrations [app_label] [migration_name]

New features:

• raise warning when create or dropping an index in a non-concurrent manner using postgresql

Miscellaneous:

• Add complete and working support for toml configuration files
• Handle --verbosity 0 or -v 0 correctly to not print anything from the linter
• Add code coverage to the linter
• Renamed master branch to main