LEAF 5.0.2-beta1 发布，嵌入式 Linux 网关

LEAF 是一个安全、功能丰富、可定制的嵌入式 Linux 网络设备，用于各种网络拓扑逻辑，目前主要作为网关、路由器、防火墙和无线AP来使用。

Release Notes: This beta version provides a major fix for an issue where the standard editor showed garbage on x86_64 images. A new boot logo (including CLI access and hardware tests during boot) has been added for ISO images. Of the usual package and kernel updates, the update of libusb (and addition of a libusb-compat package for packages relying on the old version) is the most visible one