📦 (ci) add PHP 7.2 to travis build matrix

.travis.yml

@@ -2,6 +2,7 @@ dist: trusty
 language: php
 php:
 # the latest and greatest, has some issues that are excluded below in matrix.allow_failures
+- 7.2
 - 7.1
 # the 7.0 build demonstrates that everything is basically ok for 7.0, users might want to wait for 7.1 to run it
 - 7.0
@@ -24,6 +25,9 @@ matrix:
   # there are currently some testing issues with DateTime precision on 7.1
   - env: PYTHON=false
     php: 7.1
+  # there are some issues with phpunit as well as some deep in zf1 on 7.2
+  - env: PYTHON=false
+    php: 7.2
   exclude:
   # by excluding all of python we make way to just runu python tests in one seperate instance
   - env: PYTHON=true