Merge pull request #84 from cpinte/fix_dustprop #141

Job	Run time
build+test (linux, gfortran, openmp=yes, release=yes)	31s
build+test (linux, gfortran, openmp=yes, release=no)	32s
build+test (linux, gfortran, openmp=no, release=yes)	30s
build+test (linux, gfortran, openmp=no, release=no)	27s
build+test (linux, ifort, openmp=yes, release=yes)	20m 5s
build+test (linux, ifort, openmp=yes, release=no)	15m 18s
build+test (linux, ifort, openmp=no, release=yes)	30m 33s
build+test (linux, ifort, openmp=no, release=no)	19m 25s
build+test (macos, gfortran, openmp=yes, release=yes)	22m 19s
build+test (macos, gfortran, openmp=yes, release=no)	22m 18s
build+test (macos, gfortran, openmp=no, release=yes)	29m 54s
build+test (macos, gfortran, openmp=no, release=no)	27m 19s
build+test (macos, ifort, openmp=yes, release=yes)	30m 8s
build+test (macos, ifort, openmp=yes, release=no)	26m 20s
build+test (macos, ifort, openmp=no, release=yes)	35m 39s
build+test (macos, ifort, openmp=no, release=no)	30m 45s
release	0s
benchmark	0s
	5h 12m 3s

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