Add PHP 7.3 to Travis, remove HHVM

Author: StudioMaX

.travis.yml

@@ -4,23 +4,21 @@ cache:
   directories:
     - $HOME/.composer/cache/files
 
-sudo: false
-
 php:
-  - 5.4
-  - 5.5
   - 5.6
   - 7.0
   - 7.1
   - 7.2
-  - hhvm
+  - 7.3
 
 matrix:
   include:
     - php: 5.3
       dist: precise
-  allow_failures:
-    - php: hhvm
+    - php: 5.4
+      dist: trusty
+    - php: 5.5
+      dist: trusty
 
 before_script:
   - curl -sS https://getcomposer.org/installer | php