v2.4.0

Added

• Add legend.groupclick options [#5849, #5906],
  with thanks to @brussee for the contribution!
• Add touch support to slider component [#5856],
  with thanks to @keul for the contribution!
• Provide bbox of hover items in event data [#5512]

Changed

• Upgrade regl module from version 1.6.1 to version 2.1.0 [#5870]

Fixed

• Fix invalid call to lib.promiseError in lib.syncOrAsync [#5878],
  with thanks to @jklimke for the contribution!
• Use hoverlabel.font for group titles in unified hover modes [#5895]