Add some higher versions and start testing them

Author: hannesvdvreken

.travis.yml

@@ -5,16 +5,22 @@ php:
   - 5.6
   - 7.0
   - 7.1
+  - 7.2
 
 env:
   - LARAVEL_VERSION="4.2.*"
   - LARAVEL_VERSION="5.0.*"
   - LARAVEL_VERSION="5.4.*"
+  - LARAVEL_VERSION="5.5.*"
 
 matrix:
   exclude:
   - php: 5.5
     env: LARAVEL_VERSION="5.4.*"
+  - php: 5.5
+    env: LARAVEL_VERSION="5.5.*"
+  - php: 5.6
+    env: LARAVEL_VERSION="5.5.*"
 
 before_script:
   - travis_retry composer self-update