Tests

Add Rational Quadratic Spline Transforms to Normalizing Flows #436

Job	Run time
lint	1m 38s
test (ubuntu-latest, 3.10, jax)	9m 14s
test (ubuntu-latest, 3.10, tensorflow)	10m 24s
test (ubuntu-latest, 3.10, torch)	6m 13s
test (ubuntu-latest, 3.11, jax)	10m 2s
test (ubuntu-latest, 3.11, tensorflow)	11m 26s
test (ubuntu-latest, 3.11, torch)	6m 43s
test (windows-latest, 3.10, jax)	15m 15s
test (windows-latest, 3.10, tensorflow)	17m 50s
test (windows-latest, 3.10, torch)	13m 42s
test (windows-latest, 3.11, jax)	15m 39s
test (windows-latest, 3.11, tensorflow)	19m 14s
test (windows-latest, 3.11, torch)	14m 31s
	2h 31m 51s

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