Material UI 4.8.2 release, Material Design React assembly

Material UI 4.8.2 released. Material UI is set to achieve a standard Google Material Design React component, which is a front end JS framework, mainly used in the field of Web.

update content:

@material-ui/[email protected]

• [Badge] documentation for the repair of anchorOrigin ( # 18982 ) 
• [DialogContent] add the missing class type separator ( # 18984 ) 
• [RadioGroup] Add useRadioGroup hooks ( # 18920 ) 
• [Slider] repair discrete tag highlighted ( # 18993 ) 
• [The Slider] Event logic improved pointer ( # 19010 )
• [TablePagination] fix duplicate error Key ( # 18988 )
• [TableSortLabel] prop IconComponent relaxed requirements (in typescript # 18936 )
• [TableSortLabel] Default Ascending ( # 19013 )
• [l10n] Add Portuguese (pt-PT) locale ( # 18987 )

Update Description: https://github.com/mui-org/material-ui/releases/tag/v4.8.2