Upgrade priority: Medium (timely upgrade recommended) due to changes: Bypass chain-selection subsystem until disputes are enabled. (#3676), Removed unneeded deps (#3658)

• This change introduces a database migration - After upgrading your node, you will not be able to revert to v0.9.10 without resyncing the chain

Native runtimes:

• Polkadot: 9110
• Kusama: 9111
• Westend: 9111
• Rococo: 9111

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

• rustc 1.55.0 (c8dfcfe04 2021-09-06)
• rustc 1.57.0-nightly (51e514c0f 2021-09-12)

WASM runtimes built with srtool using rustc 1.53.0 (53cb7b09b 2021-06-17).

Proposal hashes:

• polkadot_runtime-v9110.compact.compressed.wasm: 0x791e698f3690481e0eb16d35017cf3bb27ec095ec6f27dafd3a230b76dc42f86

• kusama_runtime-v9111.compact.compressed.wasm: 0x85b3f283e7f403acc12ce89005f72ccf8d1eb4ff2eab4870f7d345b76c56fb5d

• polkadot_runtime-v9110.compact.wasm: 0xe874dd4219efa603acc0ab24a592d6f1b8553b7aedb196d1ef65fdd7fc3b8fe5

• kusama_runtime-v9111.compact.wasm: 0x48a9fa972b89dfee229f1c486345a30a49d54f61c3255ffc8aebee8c1a7ecbc6

Changes

• dockerfiles: upgrade to ubuntu:20.04; some chore (#3828)

• add parachains pallets to Polkadot runtime (#3815)

• Put all authorities of a session into SessionInfo. (#3813)

• staking-miner: remove need of a file to pass the seed (#3680)

• Bypass chain-selection subsystem until disputes are enabled. (#3676)

• demote warnings due to disconnected dispute coordinator (#3672)

• Removed unneeded deps (#3658)

• CI: rustdoc (#3613)

Client

• follow-chain testing mode for try-runtime (and revamp CLI configs). (paritytech/substrate#9788)
• Use tokio runtime handle instead of TaskExecutor abstraction (paritytech/substrate#9737)
• Store the database in a role specific subdirectory (paritytech/substrate#9645)
• Fix state_subscribeRuntimeVersion for parachains (paritytech/substrate#9617)
• ✅ trivial Emit log on Runtime Code change. (paritytech/substrate#9580)
• Simplify NativeExecutionDispatch and remove the native_executor_instance! macro (paritytech/substrate#9562)
• Make choosing an executor (native/wasm) an explicit part of service construction (paritytech/substrate#9525)
• Add childstate_getStorageEntries RPC (paritytech/substrate#9459)
• Integrate Wasmer into Substrate sandbox environment (paritytech/substrate#5920)

Runtime

• ⏳ pending non-critical audit Companion for #8615: enrich metadata with type information (#3336)
• ✅ not live Tidy up XCM errors in preparation for v2. (#3988)
• ✅ trivial Allow staking miner to use different election algorithms (#3752)
• ✅ not live XCM: Automatic Version Negotiation (#3736)
• ✅ not live XCM: Allow reclaim of assets dropped from holding (#3727)
• ⏳ pending non-critical audit New Proxy for Auctions + Crowdloans + Registrar + Slots (#3683)
• ✅ not live XCM v2: Scripting, Query responses, Exception handling and Error reporting (#3629)
• ✅ trivial Fungibles and Non-Fungibles Create and Destroy Traits + Assets and Uniques Implementation (paritytech/substrate#9844)
• ✅ audited Rework Transaction Priority calculation (paritytech/substrate#9834)
• ⏳ pending non-critical audit Migrate pallet-tips to the new pallet attribute macro (paritytech/substrate#9711)
• ✅ not live Implemented seal_ecdsa_recovery function in the contract pallet (paritytech/substrate#9686)
• ✅ not live contracts: Remove state rent (paritytech/substrate#9669)
• ⏳ pending non-critical audit Use the precise number of approvals when constructing RawOrgin::Members (paritytech/substrate#9647)
• ✅ trivial Add VoteLocking config (paritytech/substrate#9641)
• ✅ trivial Make System Events Private from the Runtime (paritytech/substrate#9619)
• ✅ trivial Emit log on Runtime Code change. (paritytech/substrate#9580)
• ✅ not live Stabilize seal_debug_message (paritytech/substrate#9550)
• ✅ not live Custom Benchmark Errors and Override (paritytech/substrate#9517)
• ✅ audited Implement pallet-bags-list and its interfaces with pallet-staking (paritytech/substrate#9507)
• ⏳ pending non-critical audit Generate storage info for pallet authority_discovery (paritytech/substrate#9428)
• ✅ audited pallet-vesting: Support multiple, merge-able vesting schedules (paritytech/substrate#9202)
• ⏳ pending non-critical audit Implement a CountedStorageMap (paritytech/substrate#9125)