Merge pull request #279 from snapshotpl/php72

PHP 7.2 must pass

Author: weierophinney

.travis.yml

@@ -52,8 +52,6 @@ matrix:
     - php: 7.2
       env:
         - DEPS=latest
-  allow_failures:
-    - php: 7.2
 
 before_install:
   - if [[ $TEST_COVERAGE != 'true' && "$(php --version | grep xdebug -ci)" -ge 1 ]]; then phpenv config-rm xdebug.ini || return 0 ; fi