shorten operator overloading etc.

6 jobs for NIFTy_4 in 16 minutes and 34 seconds
Status Name Job ID Coverage
  Test
passed test_python2_mpi #539280

00:15:36

passed test_python2_scalar #539278

00:01:42

67.0%
passed test_python3_mpi #539281

00:15:50

passed test_python3_scalar #539279

00:01:10

 
  Release
passed pages #539282

00:00:44

 
  Deploy
passed pages:deploy

00:00:00