database64128

As a part of the refactoring process in shadowsocks-windows v5, I have reimplemented online config support to strictly follow the new spec. The basic file format is no longer supported.

> Does v2ray intercept all system traffic or does it work as a system proxy? Both are supported and widely used. When intercepting all traffic, a [sniffing](https://www.v2fly.org/config/inbounds.html#sniffingobject) mechanism can be...

I'd like to second this proposal. Back in February, I [benchmarked](https://github.com/shadowsocks/shadowsocks-rust/issues/426#issuecomment-786465508) several implementations to compare the transfer rate of a single TCP connection. It was for a different purpose, but...

I don't think so. Most students actually use the Internet service from common ISPs "out of box". They most likely only switch to education networks on demand.

This PR also breaks the convention of categorizing domains using the host entity's location. Traditionally we reduce the inconvenience from this by using attributes like `cn`. But in this case,...

> It turns out that my institute has special routing rules for database sites because the accessing IP shown on such sites belongs to CERNET while the one shown on...

> What's the usecase of surfing paid databases w/o access to the academic contents? You can still view the abstract and other basic information if you have not subscribed or...

> You still can visit these sites without proxy, I'm sure most of them are not blocked. Actually, the change in this PR doesn't affect my setup. These sites will...

> And I gradually find out that pushing things too far from practicality is not going to serve any good. I don't think removing a bunch of non-CN scholar sites...

Since [4.3.0.0](https://github.com/shadowsocks/shadowsocks-windows/releases/tag/4.3.0.0), shadowsocks-windows defaults to direct connection for domains in `geosite:cn` and `geosite:geolocation-!cn@cn` in PAC mode. More details: shadowsocks/shadowsocks-windows#2990