Idu

What's Changed
* Tests to support Linux (different behaviour for du) by jftsang in https://github.com/jftsang/idu/pull/4
* Skip run_du unit tests if system is not Linux or Darwin by jftsang in https://github.com/jftsang/idu/pull/5
* Fix flake8 errors by jftsang in https://github.com/jftsang/idu/pull/7
* human-readable numbers
* open current directory in Finder (for MacOS)

**Full Changelog**: https://github.com/jftsang/idu/compare/0.1.0...idu/0.4.0

What's Changed
* Create build.yml by jftsang in https://github.com/jftsang/idu/pull/1
* Tests to support Linux (different behaviour for du) by jftsang in https://github.com/jftsang/idu/pull/4
* Skip run_du unit tests if system is not Linux or Darwin by jftsang in https://github.com/jftsang/idu/pull/5
* Fix flake8 errors by jftsang in https://github.com/jftsang/idu/pull/7

New Contributors
* jftsang made their first contribution in https://github.com/jftsang/idu/pull/1

**Full Changelog**: https://github.com/jftsang/idu/commits/idu/0.3.0