* [Fix] fix crash when a custom propType return lacks `.data`; call `hasOwnProperty` properly (#370)
 * [meta] Fix formatting in CHANGELOG.md (#367)
 * [Tests] add missing test coverage (#370)
 * [Tests] convert normal `it` functions to arrow functions (#370)
 * [Tests] do not fail fast; add react 17 (#366)
 * [Dev Deps] update `eslint`