Document the 0.2.3 development build and community changes

package.json

@@ -1,6 +1,6 @@
 {
   "name": "stronghold-protocol-alliance",
-  "version": "0.2.2",
+  "version": "0.2.3-dev",
   "private": true,
   "description": "明日方舟「卫戍协议：盟约」非官方同人联机网页复刻（1–4 人合作，Node.js 服务器 + 浏览器客户端）",
   "license": "GPL-3.0-or-later",