chore: bootstrap 0.4.0 and set up release-plz automation #84

Job	Run time
Clippy	30s
Lint	8s
Check no-std target wasm32-wasip1	18s
Test on windows-latest	1m 40s
Test on ubuntu-latest	41s
Test on macOS-latest	46s
Check no-std target wasm32-unknown-unknown	31s
	4m 34s

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