asynchronous backing

[brenzi]

configure for 6s block time target

• [ ] Phase 1: Prepare and deploy runtime, but leave blocktime at 12s: https://github.com/polkadot-fellows/runtimes/pull/80
  • [ ] merge https://github.com/polkadot-fellows/runtimes/pull/80
  • [ ] Rococo
  • [ ] Kusama
• [ ] Phase 2: Update and deploy collators to polkadot-v1.2.0
  • [ ] merge #206
  • [ ] deploy Rococo
  • [ ] deploy Kusama
• [ ] Phase 3: Adjust blocktime to 6s in runtime and deploy

Async Backing Guide.pdf

example PR: https://github.com/paritytech/polkadot-sdk/pull/1619

New official guide: https://wiki.polkadot.network/docs/maintain-guides-async-backing