**Issue:**
When changing the mode, Clash server will return an error `{"message":"Body invalid"}`.

**Changes:**
According to the https://github.com/Dreamacro/clash/blob/master/tunnel/mode.go. Make first-letter uppercase to make the mode-changing work. Tested locally.

for https://github.com/haishanh/yacd/issues/496

Bumps [websocket-extensions](https://github.com/faye/websocket-extensions-node) from 0.1.3 to 0.1.4.
- [Release notes](https://github.com/faye/websocket-extensions-node/releases)
- [Changelog](https://github.com/faye/websocket-extensions-node/blob/master/CHANGELOG.md)
- [Commits](https://github.com/faye/websocket-extensions-node/compare/0.1.3...0.1.4

)

Signed-off-by: dependabot[bot] <support@github.com>

also starting to self hosting font files

for https://github.com/haishanh/yacd/issues/491

for #488