Changes from 3.2.2 to 3.2.3

Bug fixes

• Fixed data corruption in b2nd get_slice for typesize > 255. The
  compact get path introduced in 3.2.2 passed item counts to
  blosc2_getitem_ctx() in array-typesize units, but chunks whose
  typesize exceeds BLOSC_MAX_TYPESIZE (255) are compressed with an
  internal typesize of 1, so small slice reads returned truncated blocks
  (only the first blocknitems bytes were correct). Item counts are
  now expressed in the chunk's actual item unit, keeping the fast path
  both correct and O(request) for large typesizes. Added a regression
  test covering typesize > 255 on the get_slice path.

Notes

• This is a hot-fix release with no API/ABI changes. Users of 3.2.2
  reading slices from b2nd arrays with typesize > 255 should upgrade.