Paylinks 5.0.4

What's Changed

• 为项目添加xml文档生成，同时打包到nuget里。 by @xljiulang in #189
• 修复对GetNeedVerify()为false的请求仍验证平台证书存在生的问题。 by @xljiulang in #190

New Contributors

• @xljiulang made their first contribution in #189

Full Changelog: 5.0.3...5.0.4