Make Box2d::contains and Box2d intersects faster #92

Job	Run time
Check code formatting	5s
Linux (1.56.0)	1m 30s
Linux (stable)	12s
Linux (beta)	17s
Linux (nightly)	17s
Linux (--features serde, 1.56.0)	1m 36s
Linux (--features serde, stable)	18s
Linux (--features serde, beta)	24s
Linux (--features serde, nightly)	20s
Linux (--no-default-features --features libm, 1.56.0)	1m 24s
Linux (--no-default-features --features libm, stable)	19s
Linux (--no-default-features --features libm, beta)	20s
Linux (--no-default-features --features libm, nightly)	17s
Linux (stable, --features mint)	17s
Linux (stable, --features bytemuck)	14s
Linux (stable, --features arbitrary)	13s
Linux (nightly, --features unstable)	16s
Linux (nightly, --features unstable,serde)	21s
Result	1s
	8m 41s

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