v2.1.0: Extend compatibility

What's Changed

• Extend compatibility till Symfony console ^7

What's else Changed (minors)

• Add badge with state of autotests
• Rename workflow of automated testing
• Change versions of actions
• Add badge with maintainability index
• Install Phive into Docker container
• Update building of Docker image
• Stabilize testing

Full Changelog: v2.0.1...v2.1.0

Fix code coverage report

Merge pull request #16 from Aeliot-Tm/fix_report_row_comparing

Fix code coverage report

Implement user-friendly baseline

v2.0.0

Fix deprecation message

Add compatibility with PHP 7.1

Merge pull request #8 from Aeliot-Tm/extend_compatibility

Add compatibility with PHP 7.1

Implement baseline builder

Merge pull request #5 from Aeliot-Tm/some_updates

Update documentation & register bin script of baseline builder

Base implementation

v.0.1

Add keywords