- Update to 3.12.1
  ## Breaking changes
  * Support for Python 3.8 was dropped (PR 2471). Python 3.9 or
    newer is required to build or install h5py 3.12.
  * The minimum supported version of HDF5 was increased to 1.10.6
    (PR 2486). If you need h5py on HDF5 1.10.4 or .5, please use
    h5py 3.11.
  * The fill time for chunked storage was previously set to
    h5d.FILL_TIME_ALLOC. Now this the default comes from HDF5,
    which uses h5d.FILL_TIME_IFSET (equivalent to
    fill_time='ifset') (PR 2463). Please use fill_time='alloc' if
    the change is a problem for you.
  ## Exposing HDF5 functions
  * Expose fill time option in dataset creation property list via
    the fill_time parameter in create_dataset() (PR 2463).
  ## Bug fixes
  * Fix an error where native float16 support is not available (PR
    2422).
  * Fixed values of H5F_close_degree_t enum (PR 2433).
  * External links are now accessed with libhdf5’s default access
    properties (PR 2433).
  * Fix the iteration order for the root group in a file with
    creation order tracked (PR 2410).
  * Fixed some deprecation warnings from NumPy (PR 2416).
 ## Building h5py
  * Require a newer version of mpi4py for Python 3.12 (PR 2418).
  * The test suite is now configured to fail on unexpected warnings
    (PR 2428).
  * The generated Cython wrapper code (defs.* & _hdf5.pxd) is now
    specific to the version of HDF5 it’s building for. If the

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