Unreleased changes

Added external prop to ResourceList (#2408)
Added onMouseEnter and onTouchStart props to Button (#2409)
Added ariaHaspopup prop to Popover (#2248)
Fixed an accessibility issue where the Form implicit submit was still accessible via keyboard (#2447)
Moved Button styles from the Buttongroup CSS file to the Button CSS file (#2441)
Added footerActionAlignment prop to control <Card> footer action alignment, defaults to 'right'
Improved contrast of MessageIndicator with a border (#2428)
Removed the need for z-indexes in Icon (#2207)
Added features prop to AppProvider (#2204)
Added support for using EmptyState in a content context (#1570)
Page no longer renders navigation or actions in print mode (#2469)
Added an emptyState prop to ResourceList (#2160)
Migrated Dropzone to a functional component and reduce complexity (#2360)

Prevented scrolling to Popover content in development (#2403)
Fixed an issue which caused HSL colors to not display in Edge (#2418)
Fixed an issue where the dropzone component jumped from an extra-large layout to a layout based on the width of its container (#2412)
Fixed an issue which caused HSL colors to not display in Edge (#2418)
Changed Button's disclosure prop to be boolean | "up" | "down", allowing greater control over the direction the disclosure caret faces (#2431)
Fixed a race condition in DatePicker (#2373)
Added the top bar height to the Topbar in Frame to ensure the Sticky components get the correct top position (#2415)
Fixed merge mutating its arguments (#2317)
Updated Card footer actions to be right aligned by default again (#2407)

Provide feedback