Replace PHP 7.0 CI build with 7.2

Author: slavcodev

.travis.yml

@@ -5,12 +5,12 @@ language: php
 matrix:
   fast_finish: true
   include:
-    - php: 7.0
     - php: 7.1
       env:
         - EXECUTE_COVERAGE=true
+    - php: 7.2
   allow_failures:
-    - php: 7.0
+    - php: 7.2
 
 notifications:
   email: false