Xray-core发布1.3.1版本

昨天Xray项目发布了Xray Core的1.3.1版本。相对于之前的版本，该版本变动较小，做了一些小的功能增强和bug修复。

以下是Xray-core 1.3.1版本的发行说明：

Features

• Enable (X)TLS hot reloading by default #281
• Add /opt/share/xray/ to assets location @kidonng

Fixes

• Fix key derivation function panic in Go 1.16 @rprx
• Fix freedom outbound UDP redirect @rprx
• Fix context canceled while dialing HTTP/2 @JimhHan
• Restrict tags to be unique @JimhHan
• Skip closed client being chosen for reverse connection @Xray9
• Fix ALPN being set to h2 by default when using TCP transport with (X)TLS @AkinoKaede
• Remove useless imports in main/run.go @rprx

Chores

• Add GitHub Actions @kokeri @xinb @AkinoKaede @JimhHan
• Use Go 1.16.0
• Upgrade dependencies