# [1.0.0](https://github.com/packsaddle/ruby-natural_number_string/compare/v0.3.1...v1.0.0) (2015-09-27) Add yard document. ## [0.3.1](https://github.com/packsaddle/ruby-natural_number_string/compare/v0.3.0...v0.3.1) (2015-09-26) Update document. # [0.3.0](https://github.com/packsaddle/ruby-natural_number_string/compare/v0.2.1...v0.3.0) (2015-09-26) Drop `#natural_number_string?`. Use `#positive_integer_string?` or `zero_or_positive_integer_string?`. ### Features * **natural_number:** natural_number_string? is not clear ([bdd8a4c](https://github.com/packsaddle/ruby-natural_number_string/commit/bdd8a4c)) ## [0.2.1](https://github.com/packsaddle/ruby-natural_number_string/compare/v0.2.0...v0.2.1) (2015-09-26) ### Features * **positive:** add positive_integer_string? ([69ecf8a](https://github.com/packsaddle/ruby-natural_number_string/commit/69ecf8a)) * **zero-or-positive:** add zero_or_positive_integer_string? ([6d3c46b](https://github.com/packsaddle/ruby-natural_number_string/commit/6d3c46b)) # [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))