v0.2.0: Import name2code and code2name directly from top-level package

Changed

• Import name2code and code2name directly from top-level package.

Full Changelog: v0.1.0...v0.2.0

initial release: 0.1.0

Full Changelog: https://github.com/iwaim/jp-prefectures-simple-python/commits/v0.1.0