fix #5

Allowing dev stability for Shoop - updated to latest version of Shoop

Author: joshbruce

composer.json

@@ -14,7 +14,8 @@
     "league/commonmark": "~1.5"
   },
   "require-dev": {
-    "phpunit/phpunit": "~9.1"
+    "phpunit/phpunit": "^9.1",
+    "8fold/php-shoop": "^0.10.17@dev"
   },
   "autoload": {
     "psr-4": {
@@ -31,5 +32,6 @@
     "preferred-install": "dist",
     "sort-packages": true
   },
+  "minimum-stability": "dev",
   "prefer-stable": true
 }