[maleadt]

Widens the CEnum compat to 0.5, 1.

CEnum 1.0 was tested against this package (and the rest of the JuliaGPU stack) with no failures attributable to it. All @cenum declarations across the dependents evaluate to the same base type and members under 0.5 and 1.0. The one semantic change, shifts on Cenum values no longer widening to a larger integer type, is not used here. Older 0.x entries are dropped since 0.5 has been current for years.

The resolver will only pick CEnum 1.0 once every package in an environment allows it, so this can be merged independently of the other packages.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.65%. Comparing base (218dc51) to head (7156475).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #697      +/-   ##
==========================================
- Coverage   81.35%   80.65%   -0.70%     
==========================================
  Files          52       51       -1     
  Lines        4092     3971     -121     
==========================================
- Hits         3329     3203     -126     
- Misses        763      768       +5     

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