Fix Travis job: - Only one task per job (either a build or tests) - Test new PHP version 7.2 and 7.3 - Don't use the composer.lock as users won't - Test each version with --prefer-lowest
Fix Travis job:
- Only one task per job (either a build or tests)
- Test new PHP version 7.2 and 7.3
- Don't use the composer.lock as users won't
- Test each version with --prefer-lowest

ravage84/phpmd,phpmd/phpmd