v4.0.0-beta.2

May 13, 2019

A big thanks to the 13 contributors who made this release possible!

This is a stability release preparing v4.

@material-ui/core@v4.0.0-beta.2

• [Box] Add export to barrel (index.js) (#15602) @ljvanschie
• [ButtonBase] Extend error message for invalid component prop (#15627) @eps1lon
• [Select] Add to docs that options must be direct descendants (#15619) @bh1505
• [SwipeableDrawer] Remove internal accesses in the tests (#15469) @joshwooding
• [Tabs] scrollButtons have an empty button error in compliance tools (#15646) @elnikolinho
• [useScrollTrigger] Enhance trigger, improve tests (#15634) @cvanem

@material-ui/styles@v4.0.0-beta.2

• [styles] Fix warning false positive (#15595) @oliviertassinari
• [styles] Keep MuiThemeProvider for backward compatibility (#15650) @oliviertassinari

@material-ui/system@v4.0.0-beta.2

• [system] Fix css function rejecting certain prop types (#15611) @eps1lon

@material-ui/lab@v4.0.0-alpha.11

• [SpeedDial] Fix classname override logic (#15652) @janhesters

Docs

• [docs] Add custom default props handler (#15473) @eps1lon
• [docs] Add next page link (#15656) @mbrookes
• [docs] Add QuintoAndar in the showcase (#15622) @oliviertassinari
• [docs] Fix dead David DM badges in README (#15667) @mbrookes
• [docs] Fix few grammar issues (#15643) @DDDDDanica
• [docs] Fix plural spelling (#15613) @cvanem
• [docs] Fix some dev-only warnings (#15640) @eps1lon
• [docs] Fix the adapting makeStyles based on props example syntax (#15621) @devarsh
• [docs] Improve installation instructions for running the docs locally (#15608) @andreawaxman
• [docs] Improve v3 migration guide (#15615) @eps1lon
• [docs] Link edit page button to github editor (#15659) @mbrookes
• [docs] Miscellaneous polish (#15665) @eps1lon
• [docs] Reorganize the structure (#15603) @mbrookes
• [docs] Update the translations (#15653) @mbrookes

Core

• [core] Drop partial chrome 41 support (#15630) @eps1lon
• [core] Optimize clsx usage (#15589) @merceyz
• [core] Remove react-event-listener from function components (#15633) @joshwooding
• [core] Upgrade the dev dependencies (#15590) @oliviertassinari