Release 0.4.0

0.4.0 (2023-06-27)

⚠ BREAKING CHANGES

• Layer#additionalLayerProperties is now an object instead of an array.
  This should make it easier to access individual keys. (#65) (33fd2f9)
  Thanks Lukasz Czaplinski (@scoiatael)

Features

• Added Group#additionalProperties (#65) (33fd2f9)
  Thanks Lukasz Czaplinski (@scoiatael)