Tests do not pass with `--profile release`

[LecrisUT]

While packaging this project for Fedora, we encountered test failures:

test entropy::tests::test_kl ... ok
test entropy::tests::test_kl_with_noisy_negative_qs - should panic ... FAILED
test histogram::bins::bins_tests::get_panics_for_out_of_bounds_indexes - should panic ... ok
test entropy::tests::test_cross_entropy_with_noisy_negative_qs - should panic ... FAILED
test histogram::strategies::auto_tests::empty_arrays_are_bad ... ok

ndarray-stats/src/entropy.rs

Lines 313 to 327 in 2b07b9e

	#[test]
	#[should_panic]
	fn test_cross_entropy_with_noisy_negative_qs() {
	let p = array![n64(1.)];
	let q = array![n64(-1.)];
	let _ = p.cross_entropy(&q);
	}
	#[test]
	#[should_panic]
	fn test_kl_with_noisy_negative_qs() {
	let p = array![n64(1.)];
	let q = array![n64(-1.)];
	let _ = p.kl_divergence(&q);
	}

I have tried locally with --profile dev/release and confirmed that the failure of "should_panic" is specific to release. We believe the issue is that f64::log does not (always?) panic for negative numbers, instead it would just return NaN.

Edit: we discussed it a bit more and it is more likely because of noisy_float implementation

For each floating point number that is created, a debug_assert! invocation is used to check if it is valid or not.