rtty 发行版 - 木兰确实

## Bug Fixes
- Remove some code that does not arrive ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/a0da68e6eccd2b2b834e8e7d56dace4e17f213bf))
- set repeat time for check web connection timeout ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/28931cf823e7aeed2ef7fd2318185026bc9d2b91))
- can't show rtty version by '-V' ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/bc6be3c997df802283ea555d858c866e8fc17d25))

## Documentation
- update ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/e8d99be562144f358043df34d0ab649bd0aecca2))

## Code Refactoring
- change the login process to improve stability ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/a13b7885f6afc72f71d0ed923e9ac3c8a5d16659))
- Match the protocol version between rtty and rttys ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/1f4309b7553234c8d068d631dc37f227257c7636))

## Performance Improvements
- Use flow control ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/11bdde6cb204072ffa7e3dd797f6983ed825c654))
- improve code for upload file ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/f9f89ef05b89927cc4af850b7527754164a3908f))
- improve upload/download file ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/f1039216bae5e45c2c0b4da3a16bf0f44f6dc854))
- improve http proxy ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/f2c93b69e60f0ee408d15fd51b6a11d82af2384b))

## Chores
- improve code ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/4d6f873a91796ffed3d29e691520aee5f3096a01))
- bump version 8.0.0 ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/98edb95f471bab3a667b01e119a71ae23fb6df0c))

最后提交信息为： chore: bump version 8.0.0

v7.5.0

4ccfae9

2021-09-15 14:25

v7.5.0

## Features
- whether check peer certificate configurable ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/0a263bdf029751b2d7f6b65a97cae57972f61a81))
- ssl: clearer error message ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/b40fd90192eb7ca012fe3867ebfe5f5f3b0ccb9d))
- ssl: clearer error message ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/4ec4225cd52033eefecfb39c5c5daa8b63983319))

## Bug Fixes
- skip a second login authentication fail in busybox ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/d57a6d942c62cbf6f27415557c26686c16e8fae9))
- fix a log level ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/f29d160176ae47c75b0aa4f54f0e6695ecce5b36))
- should exit when ssl_session_new fail ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/d4c7bbd9caaa073fac7dd71d37e35f09d13d9c45))
- compile error with wolfssl ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/c16482d53c6920bd5149a90c4d959839d7f4cde6))
- ssl3_write_pending:bad write retry ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/50c2171c2ca5338fbc7987306ae1d5dec6aa64e3))

## Performance Improvements
- disconnect early when an invalid message was received ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/c3aee13b3f174829fb822ecc88d1bed6d89aff29))
- kill tty which inactive in 10 minutes ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/57e23be3f722a46e03866cdfc13c4426428ce153))

## Chores
- update README_ZH ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/522fa4e72c4aff06f3019585c95390b075bfc574))
- fix FindLibev.cmake ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/6460c32bf52516b7e45c8f86194448517135f667))
- update submodule url ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/18534632eab491d9bb43007c170f7628915c41b4))
- bump version 7.5.0 ([Jianhui Zhao](https://gitee.com/zhaojh329/rtty/commit/4ccfae93dcb04146cb25460065f00d2512837cb5))

最后提交信息为： chore: bump version 7.5.0