7.2 is EOL; PHP 8 is out

Author: UmanShahzad

.travis.yml

@@ -2,9 +2,9 @@ dist: trusty
 language: php
 
 php:
-  - 7.2
   - 7.3
   - 7.4
+  - 8.0
 
 # This triggers builds to run on the new TravisCI infrastructure.
 # See: http://docs.travis-ci.com/user/workers/container-based-infrastructure/

composer.json

@@ -22,7 +22,7 @@
         }
     ],
     "require": {
-        "php": "~7.0",
+        "php": ">=7.3",
         "guzzlehttp/guzzle": "^6.3||^7.0",
         "sabre/cache": "^1.0",
         "ext-json": "*"