chore: release v0.4.0 #2007

Job	Run time
Check for changes	32s
Check Rust code 🦀	1m 47s
Build benchmarks 🏋️	4m 30s
Check Python code 🐍	2m 20s
tests (Rust nightly, coverage)	2m 27s
tests (Python)	2m 10s
tests (Rust 1.75)	2m 26s
tests (Rust stable, all features)	1m 52s
tests (Rust beta)	2m 35s
tests (Rust stable, no features)	1m 55s
Check standard extensions	1m 2s
Upload Python coverage 🐍	17s
Required checks 🦀+🐍	1s
	23m 54s

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