Also test against PHP 7.1

Author: WyriHaximus

.travis.yml

@@ -9,6 +9,7 @@ cache:
 ## PHP versions we test against
 php:
   - 7.0
+  - 7.1
   - nightly
   - hhvm
 
@@ -17,12 +18,16 @@ matrix:
   include:
     - php: 7.0
       env: dependencies=lowest
+    - php: 7.1
+      env: dependencies=lowest
     - php: nightly
       env: dependencies=lowest
     - php: hhvm
       env: dependencies=lowest
     - php: 7.0
       env: dependencies=highest
+    - php: 7.1
+      env: dependencies=highest
     - php: nightly
       env: dependencies=highest
     - php: hhvm