- 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