0.8.4

What's Changed

• update sidecar by @ermalkaleci in #440
• fix getBlockHash & add chain_getHead alias by @ermalkaleci in #441
• fix author rpc by @ermalkaleci in #442
• validate request by @ermalkaleci in #443
• Chopsticks provider by @qiweiii in #432
• improve resume by @qiweiii in #448
• disable chopsticks provider by @ermalkaleci in #450
• use worker for wasm-executor by @ermalkaleci in #445
• fix unsafe block height error by @qiweiii in #447
• fix child trie by @ermalkaleci in #449
• update sidecar script by @ermalkaleci in #454

Full Changelog: 0.8.3...0.8.4