Merge pull request #110 from grogy/patch-1

Changed PHP from 7.4 beta to stable in TravisCI

Author: mnapoli

.travis.yml

@@ -4,7 +4,7 @@ php:
   - '7.1'
   - '7.2'
   - '7.3'
-  - '7.4snapshot'
+  - '7.4'
 
 matrix:
   fast_finish: true