app/v2.1.1

This release contains important fixes and we strongly encourage everyone to upgrade.

• Fixed a bug where a specially crafted UDP message packet could cause the server to crash
• Fixed compatibility issues on FreeBSD
• Windows users can now launch directly by double-clicking the exe file

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此版本包含重要修复，强烈建议更新

• 修复一个通过构造特殊的 UDP message 包可以导致服务端崩溃的问题
• 修复 FreeBSD 上的兼容性问题
• Windows 用户现在可以通过双击 exe 文件直接启动程序了