New avatar game and PNG sequence export

Use this when: you need to know what changed in Womp on 2024-05-09.

Don't use this for: how a feature works today. Its feature page has that.

• New avatar mini-game in Discover.
• Export animations as PNG sequences for downstream compositing.

Use instead

• Wrong move: reading a changelog entry as how Womp works today. Why: later releases change things. Right move: read the feature's page under Make or Print.

Released: 2024-05-09.