- removes the PHP 7.1 support

Author: kodeart

.travis.yml

@@ -1,15 +1,14 @@
 language: php
 
 php:
-  - 7.1
   - 7.2
   - 7.3
-  - 7.4snapshot
+  - nightly
 
 matrix:
   fast_finish: true
   allow_failures:
-    - php: 7.4snapshot
+    - php: nightly
 
 install:
   - travis_retry composer update -o --no-interaction --prefer-source