Codepack

**Full Changelog**: https://github.com/ihnokim/codepack/compare/0.4.0...0.4.1

**Full Changelog**: https://github.com/ihnokim/codepack/compare/0.3.1...0.4.0

**Full Changelog**: https://github.com/ihnokim/codepack/compare/0.3.0...0.3.1

**Full Changelog**: https://github.com/ihnokim/codepack/compare/0.2.2...0.3.0

**Full Changelog**: https://github.com/ihnokim/codepack/compare/0.2.1...0.2.2

What's Changed
* Reorganize directory structure by ihnokim in https://github.com/ihnokim/codepack/pull/74
* Hotfix minor by ihnokim in https://github.com/ihnokim/codepack/pull/78
* Improve test coverage by ihnokim in https://github.com/ihnokim/codepack/pull/80


**Full Changelog**: https://github.com/ihnokim/codepack/compare/0.2.0...0.2.1