New release

[guiwitz]

Hi,

first, thanks a lot for maintaining this very useful library! I use it extensively in one of my own packages and I have noticed that Numpy 2 breaks some of the code in the current latest release (e.g. AttributeError: `np.alltrue` was removed in the NumPy 2.0 release. Use `np.all` instead.). Fixes like (bbc36af) are already on the develop branch and so I'm wondering what is the time line to get a new release of the spectral package on PyPi with those fixes (to avoid restricting Numpy < 2 or installing from a branch).