Clang-tools

What's Changed
* Add more tests for 1 and fix 7 by shenxianpeng in https://github.com/shenxianpeng/clang-tools-pip/pull/8


**Full Changelog**: https://github.com/shenxianpeng/clang-tools-pip/compare/v0.2.1...v0.2.2

What's Changed
* Refactor and resolve issues 4 and 5 by shenxianpeng in https://github.com/shenxianpeng/clang-tools-pip/pull/6

**Full Changelog**: https://github.com/shenxianpeng/clang-tools-pip/compare/v0.2.0...v0.2.1

What's Changed
* Support `clang-tools` install to a specified directory
* Support installation testing on Linux, Windows, and macOS.

**Full Changelog**: https://github.com/shenxianpeng/clang-tools-pip/compare/v0.1.0...v0.2.0

**Full Changelog**: https://github.com/shenxianpeng/clang-tools-pip/commits/v0.1.0