3.3.0

Added

• Ensure fetchTemplate method always returns string #107

Maintenance

• Update .gitattributes file with recent changes
• Update psr/http-message requirement from ^1.0 to ^1.1
• Update composer test target
• Add PHP 8.2 and 8.3 to CI
• Update badges
• Update build
• Update phpunit settings
• Add phpunit coverage report
• Add PHPUnit 10
• Update readme
• Upgrade GitHub actions checkout to v4