# [0.2.0](https://github.com/packsaddle/ruby-natural_number_string/compare/v0.1.0...v0.2.0) (2015-09-26) ### Features * **natural_number_string:** change api ([5501b2b](https://github.com/packsaddle/ruby-natural_number_string/commit/5501b2b)) # 0.1.0 (2015-09-26) ### Features * **natural-number:** implement natural number ([49e7dc0](https://github.com/packsaddle/ruby-natural_number_string/commit/49e7dc0))