Fix Travis builds

.travis.yml

@@ -1,15 +1,22 @@
 language: php
 php:
+  - "nightly"
+  - "7.4"
+  - "7.3"
+  - "7.2"
   - "7.1"
   - "7.0"
   - "5.6"
 env:
   - DOKUWIKI=master
+matrix:
+  allow_failures:
+    - php: "nightly"
 before_install:
   - wget https://raw.github.com/splitbrain/dokuwiki-travis/master/travis.sh
   - npm install
 install: sh travis.sh
 script:
-  - cd _test && phpunit --stderr --group plugin_edittable
+  - cd _test && ./phpunit.phar --stderr --group plugin_edittable
   - cd ../lib/plugins/edittable && grunt
   - grunt eslint