Adding 7.0, 7.1 and 7.2 to the tests

Author: pitbulk

.github/workflows/php-package.yml

@@ -16,7 +16,7 @@ jobs:
       fail-fast: false
       matrix:
         operating-system: ['ubuntu-latest']
-        php-versions: [5.3, 5.4, 5.5, 5.6]
+        php-versions: [5.3, 5.4, 5.5, 5.6, 7.0, 7.1, 7.2]
     steps:
       - name: Setup PHP, with composer and extensions
         uses: shivammathur/setup-php@v2 #https://github.com/shivammathur/setup-php