PHP 8 Support (#55)

Author: GrahamCampbell

.travis.yml

@@ -36,6 +36,10 @@ matrix:
       dist: bionic
       install: travis_retry docker run -it -w /data -v ${PWD}:/data:delegated --entrypoint composer registry.gitlab.com/grahamcampbell/php:7.4 install --no-suggest --prefer-dist -n -o
       script: docker run -it -w /data -v ${PWD}:/data:delegated --entrypoint vendor/bin/phpunit registry.gitlab.com/grahamcampbell/php:7.4
+    - name: PHP 8.0
+      dist: bionic
+      install: travis_retry docker run -it -w /data -v ${PWD}:/data:delegated --entrypoint composer registry.gitlab.com/grahamcampbell/php:8.0 install --ignore-platform-reqs --no-suggest --prefer-dist -n -o
+      script: docker run -it -w /data -v ${PWD}:/data:delegated --entrypoint vendor/bin/phpunit registry.gitlab.com/grahamcampbell/php:8.0
     - name: PHPStan
       dist: bionic
       install: 

composer.json

@@ -14,7 +14,7 @@
         }
     ],
     "require": {
-        "php": "^5.5.9 || ^7.0"
+        "php": "^5.5.9 || ^7.0 || ^8.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^4.8.35 || ^5.0 || ^6.0 || ^7.0",