Incompatibility with numpy>=2.0.0

[sss441803]

Hi Johnnie,

Since it's been a little while numpy>=2.0.0 is released, would there be interest in making it compatible with new numpy?

For example, if we just install cotengra by default, it goes for the highest numpy version which is incompatible, throwing error like

`np.float_` was removed in the NumPy 2.0 release. Use `np.float64` instead.

[jcmgray]

Hi Henry, so cotengra itself works with numpy v2 fine, I suspect you have an old version of a dependency e.g. nevergrad (perhaps from conda-forge where it hasn't been updated) that is throwing this error. You can either install nevergrad from pypi, or try another optimizer library, maybe cmaes which I tend to prefer now.

[jcmgray]

Yes seems to be fixed in nevergrad>=1.0.3, I've opened an issue on the feedstock to update it.