v0.8.0

Added

• Support for PHP 7.3, 7.4, 8.0

Changed

• Refactor SuggestCommand #27
• Replace travis-ci with GitHub actions
• Update php-semver-checker to v0.14.0

Removed

• Support for PHP 5.6, 7.0, 7.1 and 7.2
• Use of scrutinizer-ci during CI