[Full Changelog](https://github.com/matrix-org/matrix-js-sdk/compare/v0.12.0...v0.12.1-rc.1) * Add repository type to package.json to make it valid [\#762](https://github.com/matrix-org/matrix-js-sdk/pull/762) * Add getMediaConfig() [\#761](https://github.com/matrix-org/matrix-js-sdk/pull/761) * add new examples, to be expanded into a post [\#739](https://github.com/matrix-org/matrix-js-sdk/pull/739)