v2.13.0

What's Changed

• Moving pictures: Kitty animation frames by @HarryCordewener in #46
• Fit a box to the picture inside it in HTML by @HarryCordewener in #47
• Terminals by name; moving pictures in iTerm2; every picture feature opt-in by @HarryCordewener in #48

Full Changelog: v2.12.0...v2.13.0