build: allow dev master to be installed

Author: yCodeTech

composer.json

@@ -36,6 +36,11 @@
             "dealerdirect/phpcodesniffer-composer-installer": true
         }
     },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "1.x-dev"
+        }
+    },
     "scripts": {
         "lint": "@php ./vendor/php-parallel-lint/php-parallel-lint/parallel-lint . -e php --exclude vendor --exclude .git --exclude test_utils",
         "cs": "@php ./vendor/bin/phpcs --standard=yCodeTech",