Release Polkadot v0.8.23 · paritytech/polkadot

Upgrade priority: Medium (timely upgrade recommended) due to changes: Remove v0 node-side parachains code (#1609), Block packet size limit (paritytech/substrate#6398), Move to upstream wasmtime, refactor globals snapshot (paritytech/substrate#6759), Update to libp2p-0.23. (paritytech/substrate#6870), Distribute the network future polling time more evenly (paritytech/substrate#6903), Better prime election. (paritytech/substrate#6939)

Native runtimes:

This release was tested against the following versions of rustc. Other versions may work.

WASM runtimes built with srtool using rustc 1.47.0-nightly (d7f945163 2020-07-19).

Proposal hashes:

polkadot_runtime-v23.compact.wasm - 0x8dedaee731310e86edd95589a018250eab1c6a3587260688203d72c8daa73fb8
kusama_runtime-v2023.compact.wasm - 0x0bfdc8d06c4e791aa83d4d040129f03202764544920913354f8bf9100707e51f

Changes

Allow task manager to have children (paritytech/substrate#6771)
Revalidate transactions only on latest best block (paritytech/substrate#6824)
Move to upstream wasmtime, refactor globals snapshot (paritytech/substrate#6759)
Implement tracing::Event handling & parent_id for spans and events (paritytech/substrate#6672)
client/authority-discovery: Introduce AuthorityDiscoveryService (paritytech/substrate#6760)
RpcHandlers Refactorings (paritytech/substrate#6846)
Merge Subkey into sc-cli (paritytech/substrate#4954)
*: Update to next libp2p version 0.24.0 (paritytech/substrate#6891)
Fix benchmark read/write key tracker for keys in child storages. (paritytech/substrate#6905)

✅ trivial Remove v0 parachains runtime (#1501)
✅ trivial Update Kusama Council seats & Runners Up number (#1614)
✅ audited Custom Codec Implementation for NPoS Election (paritytech/substrate#6720)
✅ audited Time-delay proxies (paritytech/substrate#6770)
✅ trivial Support Staking Payout to Any Account (paritytech/substrate#6832)