Features

• Upgrade from Wasmer 0 to Wasmer 2, bringing better performance and reliability. #4934
• Lower regular_op_cost (execution of a single WASM instruction) from 3_856_371 to 2_207_874. #4979
• Lower data receipt cost (#4795) and base cost of ecrecover host function (#4865).
• Upgrade from one shard to four shards (Simple Nightshade Phase 0) #4953

Fixes

• Refactor RuntimeConfig (#4891, #4890)
• Parameter estimator improvements (#4811, #4834)

CODE_COLOR: CODE_YELLOW_TESTNET
RELEASE_VERSION: 1.22.0-rc.1
PROTOCOL_UPGRADE: TRUE
DATABASE_UPGRADE: TRUE
SECURITY_UPGRADE: FALSE