Allow PHP 8

Author: ddeboer

.travis.yml

@@ -26,6 +26,8 @@ matrix:
           env: COMPOSER_FLAGS="--prefer-stable --prefer-lowest"
         - php: 7.4
           env: COMPOSER_FLAGS="--prefer-stable" COVERAGE=true TEST_COMMAND="composer test-ci"
+        - php: 8.0
+          env: COMPOSER_FLAGS="--prefer-stable" TEST_COMMAND="composer test-ci"
 
 before_install:
     - if [[ $COVERAGE != true ]]; then phpenv config-rm xdebug.ini || true; fi

composer.json

@@ -11,7 +11,7 @@
         }
     ],
     "require": {
-        "php": "^7.2",
+        "php": "^7.2 || ^8.0",
         "guzzlehttp/psr7": "^1.7",
         "php-http/client-common": "^2.0",
         "psr/log": "^1.1",