Statemine v4 RC2 (for Polkadot v0.9.10)

Upgrades Statemine and Westmint to Polkadot to v0.9.10

⚠️ This is a pre-release provided to allow everyone to test and report issues.

❗️Important Changes

• New host functions: paritytech/substrate#9391
  • THIS REQUIRES COLLATORS TO UPGRADE THEIR NODES BEFORE THE 0.9.10 RUNTIME UPGRADE HITS THE RELAY CHAIN
• Transaction Version changed (1 -> 2)
  • pallet-xcm extrinsics have changed and require different encoding.

Notable Changes

• Support XCM v1

Native runtimes:

• Statemine: 4 (spec_version), 2 (transaction_version)
• Westmint: 4 (spec_version), 2 (transaction_version)

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

• rustc 1.53.0 (53cb7b09b 2021-06-17)

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

Runtime Hashes

The following hashes are the encoded call hashes for a parachainSystem.authorizeUpgrade call over XCM for the compressed runtimes:

• Statemine: 0x4f88d6ba7993c3982171948bb5fbbb2b7f1da968d3900adef670e1a9d9ad49f6
• Westmint: 0x82fe55a1734c87e5f1f1de69bc18feff4751e429d3a6a718c0258f93cb603cd0

Those hashes can be checked using (example for statemine):
subwasm --json info statemine_runtime.compact.compressed.wasm | jq -r .parachain_authorize_upgrade_hash

Changes since statemine_v3

• 40dbe4b: Update deps
• bcb3436: Update weights for Statemine, Statemint and Westmint (#643)
• 288a98d: Fix Benchmarks for Statemine-V4 release (#639)
• 431409b: bump transaction_version
• a025f90: remove applied runtime migrations
• f5a3851: Fix Statemint benchmarks (#589)
• 3555f7b: bump runtime spec version
• 870b214: update substrate to latest polkadot-v0.9.10
• 7d473c1: Use new MultiLocation syntax everywhere (#570)
• e36689f: Support XCM v1 (Companion to #2815) (#561)