PR #12 from zonky2

Conflicts:
    .travis.yml

Author: stefanheimes

.travis.yml

@@ -1,10 +1,10 @@
 language: php
 
 php:
-  - "5.6"
-  - "7.0"
-  - "7.1"
   - "7.2"
+  - "7.1"
+  - "7.0"
+  - "5.6"
 
 env:
   - CONTAO_VERSION=~3.5.5
@@ -24,3 +24,7 @@ script: ant -keep-going
 # Hack to make things work again - we can not use a shallow repository.
 git:
   depth: 2147483647
+
+cache:
+  directories:
+    - vendor