v4.0.0

@rjsf/core

• Add React 17 as a supported peer-dependency
• Introduce idSeparator prop to change the path separator used to generate field names (#2628)
• Array fields support custom widgets (previously, only multiple-choice arrays with enums or uniqueItems support it) (#2697)

@rjsf/material-ui

• Added React 17 as an optional peer dependency
• Minimum version of React required to use package is now React 16.3
• Bumped required minimum versions of @material-ui/core and @material-ui/icons to the latest (4.12.0 and 4.11.1)
  • New exports: MuiForm4 and Theme4 are aliases to the material-ui version 4 MuiForm and Theme
  • The Material-UI 4 theme will fallback to a form with a message indicating @material-ui is not available when one (or both) of the libraries are not installed
• Added support for material-ui version 5 on top of React 17
  • Requires React 17 so will need to upgrade project
  • Added @mui/material, @mui/icons-material, @emotion/react and @emotion/styled as optional peer dependencies
  • New exports: MuiForm5 and Theme5 support using the Material UI 5 libraries instead of version 4
  • The Material-UI 5 theme will fallback to a form with a message indicating @mui is not available when one (or both) of the libraries are not installed

@rjsf/chakra-ui

• Added support for this new theme

Dev / docs / playground

• Upgraded playground to use React 17
• Differentiated the material-ui 4 and 5 themes
• Added chakra-ui theme

New Contributors

• @gpop made their first contribution in #2647
• @ianwith made their first contribution in #2644
• @rodrigofuentes made their first contribution in #2692
• @green7ea made their first contribution in #2628
• @dieseldjango made their first contribution in #2695
• @alfonsoar made their first contribution in #2697
• @octalpixel made their first contribution in #2714

Full Changelog: v3.2.1...v4.0.0