- update to 5.2.1:
* Support "flat" ASCII-encoded GIFTI DataArrays (pr/1298) (PM,
reviewed by CM)
* Tolerate missing ``git`` when reporting version info
(pr/1286)
* Handle Siemens XA30 derived DWI DICOMs (pr/1296)
* Add tool for generating GitHub-friendly release notes
* Accommodate pytest 8 changes (pr/1297) (CM)

* nib-convert CLI tool to make image type and data dtype conversion
* Allow dtypes to be passed to Analyze-like images at __init__()
* Passing (u)int64 arrays to Nifti1Image and subclasses will warn
unless a header or dtype option is passed; in the future this will
become an error. Additionally, passing int or 'int' to set_data_dtype()
now raises an error, requiring an explicit numpy dtype to make 64-bit
- skip python 36