v2.3.0-alpha.1

[core] Add direction property to StatePropsOfLayout (#1404)
[core] Add config option for displaying unfocused description (#1414)
[core] Use hasType in schemaSubPathMatches (#1421)
[react] Add ajv and refParserOptions to JsonFormsInitStateProps (#1408)
[react] Fix performance issues related to introduction of context-based API (#1407)
[material] MuiCheckbox checked value should be boolean (#1412)
[material] Group labels use path instead of label (#1403)
[material] Seperate FormHelperText into description and errors (#1415)
[material] Text-based controls feature an unset button (#1193, #1360)
[material] Combinator renderers, object renderer query UI schema registry before generating one (#1363)
[angular] Add simple table renderer (#1369)

Thanks to all contributors!