### Features * Add support for `optional: false` in `belongs_to` associations. ([#1237]) * Add support for associations with `inverse_of: false` and non-standard foreign key ([#1106]) ### Bug fixes * Fix typos in documentation of `allow_values` ([#1241]) * Fix appraisal command in CONTRIBUTING.md file ([#1253]) ### Improvements * Remove minitest reporters dependency ([#1251]) * Development dependency updates [#1106]: https://github.com/thoughtbot/shoulda-matchers/pull/1106 [#1237]: https://github.com/thoughtbot/shoulda-matchers/pull/1237 [#1241]: https://github.com/thoughtbot/shoulda-matchers/pull/1241 [#1253]: https://github.com/thoughtbot/shoulda-matchers/pull/1253
