1. General

- The master specification for bodymovin that is obeyed is at
  https://github.com/airbnb/lottie-web/tree/master/docs/json
- Deviations in exported Bodymovin files compared to the specification
  taken into account as much as possible (when differences noticed)
- precomps not supported
- expressions not supported
- only frame-mode on the timeline supported (no time-mode)


2. Animation level

- unsupported properties
    - assets (reusable text and images)
    - chars (text)


3. Layers

- Only the shape layer supported
- Only alpha mask adjustment layer supported
- unsupported properties
    - ao (auto-orientation)
    - bm (blend mode)
    - maskProperties (masks)
    - sr (time stretch)


4. Shapes

- the gstroke (group stroke) element not supported
- the star element not supported
- Nested Repeater shapes not supported
- multiple active trim paths behavior is unpredictable
  (e.g. trim paths in nested groups)


5. Effects

- Only Slide and Layer Fill effects supported