v2.3.0-beta.0

[all] Update dependencies and tests (#1431, #1443)
[core] Add enum to structuralKeywords (#1435)
[core] Add minItems to array layout props (#1444)
[react] Use mapStateToEnumControlProps for enum controls (#1436)
[react] Add onChange props to React forms (#1448)
[material] Export unwrapped material controls (#1418)
[material] Use config in MaterialIntegerControl (#1422)
[material] Use createStyles in ValidationIcon.tsx (#1429)
[material] Support additional props for MuiInputText (#1430)
[material] No alert when oneOf is empty object (#1432)
[material] Fix performance issues (#1439)
[dev] Extend 'Huge' Example (#1441)
[dev] Use setupMockStore in angular material tests (#1447)

Thanks to all contributors!
Special thanks to @Lily418 for many great contributions to the JSONForms project!