Return back master php version to test closures

sergeyklay · sergeyklay · commit e8e5cb4d5f82 · 2019-04-24T20:53:19.000+03:00
See: zephir-lang/zephir#1848
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,6 @@
 language: php
 php:
-  - 'nightly'
+  - 'master'
   - '7.3'
   - '7.2'
   - '7.1'
