Allow installing on PHP 8

sanmai · web-flow · commit 2e77281786a5 · 2020-08-30T20:11:26.000+09:00
diff --git a/composer.json b/composer.json
@@ -25,7 +25,7 @@
     },
 
     "require": {
-        "php": "^7.3"
+        "php": "^7.3 || ^8.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^9.0"
