Tests

Add Rational Quadratic Spline Transforms to Normalizing Flows #433

Job	Run time
lint	1m 41s
test (ubuntu-latest, 3.10, jax)	9m 8s
test (ubuntu-latest, 3.10, tensorflow)	9m 56s
test (ubuntu-latest, 3.10, torch)	6m 0s
test (ubuntu-latest, 3.11, jax)	9m 26s
test (ubuntu-latest, 3.11, tensorflow)	10m 23s
test (ubuntu-latest, 3.11, torch)	6m 35s
test (windows-latest, 3.10, jax)	15m 22s
test (windows-latest, 3.10, tensorflow)	17m 57s
test (windows-latest, 3.10, torch)	13m 31s
test (windows-latest, 3.11, jax)	16m 14s
test (windows-latest, 3.11, tensorflow)	15m 33s
test (windows-latest, 3.11, torch)	13m 20s
	2h 25m 6s

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