Tests

Add Rational Quadratic Spline Transforms to Normalizing Flows #432

Job	Run time
lint	1m 26s
test (ubuntu-latest, 3.10, jax)	9m 2s
test (ubuntu-latest, 3.10, tensorflow)	9m 41s
test (ubuntu-latest, 3.10, torch)	5m 57s
test (ubuntu-latest, 3.11, jax)	9m 50s
test (ubuntu-latest, 3.11, tensorflow)	10m 28s
test (ubuntu-latest, 3.11, torch)	6m 59s
test (windows-latest, 3.10, jax)	16m 15s
test (windows-latest, 3.10, tensorflow)	17m 44s
test (windows-latest, 3.10, torch)	14m 49s
test (windows-latest, 3.11, jax)	17m 8s
test (windows-latest, 3.11, tensorflow)	18m 37s
test (windows-latest, 3.11, torch)	13m 47s
	2h 31m 43s

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