Use np.testing.assert_allclose for comparison in test_salt2colorlaw_vs_python (#347)
Use np.testing.assert_allclose for comparison in test_salt2colorlaw_vs_python (#347)

The "equals" fails on small, negliglible differences between different
computation paths, which is the case f.e. on i386, arm64, ppc64, riscv64.
sncosmo/sncosmo,sncosmo/sncosmo,sncosmo/sncosmo