maintenance(.travis.yml): Update PHP versions to include 7.4.

Paul Rogers · Paul Rogers · commit 89a42ac3ecd8 · 2019-12-03T12:46:35.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -4,6 +4,7 @@ php:
 - 7.1
 - 7.2
 - 7.3
+- 7.4
 
 env:
     matrix:

-Original file line number
+Diff line change
 - 7.1
 - 7.2
 - 7.3
 +- 7.4
 env:
     matrix: