Merge branch 'space_without_dtype_2' into 'master'

Space without dtype 2

See merge request !77
5 jobs for master in 16 minutes and 6 seconds (queued for 5 minutes and 18 seconds)
Status Name Job ID Coverage
  Test
passed test_min #163273

00:01:16

passed test_mpi #163274

00:02:27

passed test_mpi_fftw #163275

00:02:48

passed test_mpi_fftw_hdf5 #163276

00:03:44

45.0%
 
  Release
passed release_image_master #163277

00:05:49