Merged in eschnett/hdf5-shuffle (pull request #11)
CarpetIOF5: Activate HDF5 shuffle filter
CarpetIOF5_standalone: Activate HDF5 shuffle filter
CarpetIOHDF5: Activate HDF5 shuffle filter
CarpetIOF5: Activate HDF5 shuffle filter
CarpetIOF5_standalone: Activate HDF5 shuffle filter
CarpetIOHDF5: Activate HDF5 shuffle filter