Merge branch 'units' into 'master'

Wiener filter example with units and a little plot routine.

See merge request !59
5 jobs for master in 30 minutes and 49 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #151784
test_min

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passed #151785
test_mpi

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passed #151786
test_mpi_fftw

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passed #151787
test_mpi_fftw_hdf5

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  Release
passed #151788
release_image_master

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