Fix yaml array style and add php7.4-beta for tests

KartaviK · web-flow · commit 2fced2e324fe · 2019-08-12T14:28:52.000+03:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,9 +1,10 @@
 language: php
 
 php:
-  - 7.1
-  - 7.2
-  - 7.3
+  - '7.1'
+  - '7.2'
+  - '7.3'
+  - '7.4snapshot'
 
 matrix:
   fast_finish: true
