Test on PHP 7.4 as well as 8.0 (#440)

GrahamCampbell · sodabrew · commit 7443d16d02fb · 2019-06-17T18:04:47.000+03:00
diff --git a/.travis.yml b/.travis.yml
@@ -3,6 +3,7 @@ dist: xenial
 language: php
 php:
     - master
+    - 7.4snapshot
     - 7.3
     - 7.2
     - 7.1
