Add php 7.4 to matrix build (#275)

reedy · web-flow · commit f44ec12d9dc7 · 2020-08-01T16:00:54.000+08:00
diff --git a/.travis.yml b/.travis.yml
@@ -19,6 +19,7 @@ matrix:
         - php: 7.1
         - php: 7.2
         - php: 7.3
+        - php: 7.4
         - php: nightly
 
 env:
