Added php 7.2, 7.3 and 7.4 to travis tests

MaximilianKresse · MaximilianKresse · commit f9f29d7c2e67 · 2019-11-29T11:21:05.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -2,6 +2,9 @@ language: php
 
 php:
   - '7.1'
+  - '7.2'
+  - '7.3'
+  - '7.4'
 
 before_script:
   - composer selfupdate
