- [new] add `checkPropTypes` (#1971)
 - [new] add `legacyContextMode`, and `getChildContext` lifecycle method (#1971)
 - [fix] Filter legacy context on childContextTypes when necessary (#1968)
 - [deps] update `enzyme-adapter-utils`, `react-is`, `object.values`
 - [dev deps] update `eslint-plugin-import`, `eslint`, `eslint-plugin-react`, `rimraf`, `eslint-plugin-react`, `eslint-plugin-jsx-a11y`