0.7.1

• Minor build fixes.

0.7.0

• Add support for Branch, ChoiceGroup, and BranchGroup.

0.6.1

• FIX: Extract startTime from Message.

0.6.0

• [Breaking] FIX: BackgroundGroup is actually a mapping - it should be used in rendering BackgroundSetting.

0.5.1

• FIX: narration can be empty without text.