Merge pull request #10 from cruxinator/BumpMutationMinima

Bump mutation coverage minima on Travis builds

.travis.yml

@@ -15,7 +15,7 @@ before_script:
 script:
   - mkdir -p build/logs
   - vendor/bin/phpunit --coverage-clover build/logs/clover.xml
-  - php vendor/bin/infection  --min-msi=67 --min-covered-msi=76
+  - php vendor/bin/infection  --min-msi=96 --min-covered-msi=96
 
 after_success:
   - php vendor/bin/php-coveralls --exclude-no-stmt