Add PHP 7.3 support

vigneshgurusamy · vigneshgurusamy · commit c433d7f48581 · 2018-12-10T08:55:29.000+05:30
diff --git a/.travis.yml b/.travis.yml
@@ -5,6 +5,7 @@ sudo: false
 php:
     - 7.1
     - 7.2
+    - 7.3
 
 cache:
   directories:

-Original file line number
+Diff line change
 php:
     - 7.1
     - 7.2
 +    - 7.3
 cache:
   directories: