Drop hhvm builds and in new PHP versions

Author: AydinHassan

.travis.yml

@@ -2,7 +2,9 @@ language: php
 
 php:
   - 5.6
-  - hhvm
+  - 7.0
+  - 7.1
+  - 7.2
 
 install:
   - composer self-update
@@ -21,6 +23,3 @@ after_script:
   - wget https://scrutinizer-ci.com/ocular.phar
   - php ocular.phar code-coverage:upload --format=php-clover ./build/logs/clover.xml
 
-matrix:
-  allow_failures:
-    - php: hhvm