0.02 2023-02-06
  [Changes]
    * Added the File::Spec::Cwd class. This is the same as the Cwd module.
      In the future, the Cwd class is implemented using File::Spec::Cwd.
  [Document Improvement]
    * Added the document.
0.01 2023-02-03
  [Changes]
    * First release.