Bump min Python to 3.10

[dstansby]

As per SPEC 0 (which it says that zarr is signed up to), drop support from Python 3.8/3.9.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.91%. Comparing base (4abe4be) to head (e144faa).
Report is 35 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #531      +/-   ##
==========================================
- Coverage   99.91%   99.91%   -0.01%     
==========================================
  Files          59       59              
  Lines        2323     2318       -5     
==========================================
- Hits         2321     2316       -5     
  Misses          2        2              

Files with missing lines	Coverage Δ
numcodecs/registry.py	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes

[martindurant]

This would be a good time to ensure numpy 2 support, if it isn't already done.

[dstansby]

There's an issue here: #521; I'm happy to take a look, but don't want to open too many PRs at once 😄

[normanrz]

It would be great if you could have a look at numpy 2 support.

I wonder if we should remove line of code that codecov complains about? https://app.codecov.io/gh/zarr-developers/numcodecs/pull/531/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=zarr-developers

[dstansby]

This is good to go - the yellow CI jobs are ones no longer run as they're old versions of Python. I think removing these requires some manual adjustment of repository settings from an admin.

[normanrz]

I removed the requirement for py 3.8 and 3.9. Codecov still needs a bump.

[dstansby]

From one of the builds:

[2024-06-19T09:51:18.726Z] ['error'] There was an error running the uploader: Error uploading to https://codecov.io: Error: There was an error fetching the storage URL during POST: 429 - {'detail': ErrorDetail(string='Rate limit reached. Please upload with the Codecov repository upload token to resolve issue. Expected time to availability: 2676s.', code='throttled')}

So I think someone needs to set up using a codecov token for codecov to start working again.

[normanrz]

Alright. I added the token.