Run tests on PHP 7.4

SimonFrings · SimonFrings · commit 68ca14b7a640 · 2020-05-05T12:47:54.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -8,6 +8,7 @@ php:
   - 7.1
   - 7.2
   - 7.3
+   -7.4
 
 # lock distro so new future defaults will not break the build
 dist: trusty
