Fixes for numpy 2.0

[ejeschke]

To make ginga compatible with numpy 2.0.

This will continue to be updated as more of the third party packages become available (scipy, matplotlib, etc).

• fix #1054

[ejeschke]

There seems to be very little needed to be changed, so far.

[pllim]

Actually both scipy and matplotlib dev are available from https://anaconda.org/scientific-python-nightly-wheels/repo too.

[ejeschke]

Haven't yet installed scipy or matplotlib. This is tested so far with numpy 2.0 nightly and astropy (6.0+ dev) and pillow 10.

[ejeschke]

Actually both scipy and matplotlib dev are available from https://anaconda.org/scientific-python-nightly-wheels/repo too.

So I managed to install both of these. Seems to be working well. FYI I installed python 11 with pyside6 as the back end.

[pllim]

Great news. Thanks for checking!

[ejeschke]

@pllim, this is passing all tests when I run them locally. After testing a number of plugins pretty thoroughly, I am thinking that we could merge this. If new issues arise with np2 we can fix them when they pop up. What do you think?

[ejeschke]

Thanks, @pllim!