rttys v4.0.1 已经发布，rtty 的服务端
rttys v4.0.1 已经发布，rtty 的服务端。
此版本更新内容包括：
Features
- it's configurable whether log caller (Jianhui Zhao)
- ui: clear last selected file on upload file (Jianhui Zhao)
- support build statically (Jianhui Zhao)
Bug Fixes
- panic: send on closed channel (Jianhui Zhao)
- deadlock caused by sending keepalive frame (Jianhui Zhao)
- ui: A abnormity caused by click 'OK' when no file selected. (Jianhui Zhao)
- panic: send on closed channel (Jianhui Zhao)
Performance Improvements
- verify message length for msgTypeRegister (Jianhui Zhao)
- force use tls 1.1 #99 #99 (docooler)
Builds
- deps: bump follow-redirects from 1.14.4 to 1.14.8 in /ui (#101) #101 (dependabot[bot])
- deps: bump url-parse from 1.5.3 to 1.5.10 in /ui (#103) #103 (dependabot[bot])
- deps: bump minimist from 1.2.5 to 1.2.6 in /ui (#104) #104 (dependabot[bot])
- deps: bump async from 2.6.3 to 2.6.4 in /ui (#106) #106 (dependabot[bot])
Continuous Integration
- add arm64 (Jianhui Zhao)
