Use scipy.integrate.trapezoid and scipy.integrate.simpson

[rrjbca]

In scipy 1.14 scipy.integrate.trapz and scipy.integrate.simps will be deprecated, see the Release Notes. Use the aliases scipy.integrate.trapezoid and scipy.integrate.simpson instead.

[sbailey]

Thanks for this update. Tests are failing because "scipy.integrate.trapezoid" didn't yet exist in scipy 1.5.4, which we currently still support. scipy 1.8.1, which we use at NERSC for our current environment, includes both trapz and trapezoid, and it looks like current speclite with trapz will start breaking with scipy 1.14 (not yet released) which removes trapz.

scipy 1.5.4 was released in Nov 2020. Does anyone have a compelling reason for why we should continue to support that, vs. drop support for that and update the tests to use the oldest version of scipy that includes scipy.integrate.trapezoid?

[rrjbca]

@sbailey is there any update on dropping support for scipy 1.5? If not I am happy to update this pull request to maintain compatibility with both trapz/simps and trapezoid/simpson. We have a downstream project waiting on speclite to adopt scipy 1.14 so are keen to see such a release as soon as possible.

[weaverba137]

Thank you for pointing out this issue @rrjbca. This PR is now superseded by #91.