feat(data-table): allow isSortable to be defined in getHeaderProps (#1221)
feat(data-table): allow isSortable to be defined in getHeaderProps (#1221)


carbon-design-system/carbon-components,carbon-design-system/carbon-components,joshblack/carbon-components-react,joshblack/carbon-components-react,carbon-design-system/carbon-components-react,carbon-design-system/carbon-components-react,carbon-design-system/carbon-components