What's New in v0.3.0

This release focuses on cleaner authoring and better targeting workflows.

Highlights

Target blocks for active timeline and selection

• _timeline for add/set/remove actions in the active composition timeline.
• _selected for set/remove actions on currently selected layers.

Inheritance with _id and _extends

You can define reusable templates for compositions and layers:

compositions:
  - _id: sceneBase
    name: Scene-01
    duration: 30
    framerate: 24
    color: ff8000

  - _extends: sceneBase
    name: Scene-02

Works in:

• compositions
• compositions[].layers
• _timeline.layers

Validation guards:

• Unknown _extends target
• Duplicate _id
• Circular inheritance

Tab indentation is now tolerated

Compdown now normalizes leading tab indentation to spaces before YAML parsing. If your editor inserts tabs, your document can still parse successfully.

Migration notes

• Legacy top-level destination/layers syntax is not supported.
• Use _timeline.layers for implicit creation in the active timeline.
• Use _timeline.set.layers / _timeline.remove.layers for explicit updates/deletes.