travis: added PHP 7.4

dg · dg · commit 5b88ca3bee4a · 2019-11-13T23:09:18.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -3,6 +3,7 @@ php:
     - 7.1
     - 7.2
     - 7.3
+    - 7.4snapshot
 
 services:
     - mysql
