v0.3.0

What's Changed

• Backmerge/main to staging 200826 by @ibraheem-abe in #482
• Feat/multi competition by @ibraheem-abe in #483
• Feat/harbor 0.20.0 update by @ibraheem-abe in #485
• Feat: Update /agents-by-coldkey by @jmnmv12 in #486
• Feat/retry registry images by @ibraheem-abe in #488
• Feat: Add new fields to competition by @jmnmv12 in #489
• Update: Screener + Vali limits by @ibraheem-abe in #490

Full Changelog: v0.2.9...v0.3.0