merge develop

.ci/bb/breeze-mpim/test.all.clang

.ci/bb/breeze-mpim/test.all.nag

.ci/bb/breeze-mpim/test.all.nv

.ci/bb/breeze-mpim/test.ru-py.gcc

.ci/bb/daint-cscs/init.sh

.ci/bb/daint-cscs/test.all.cray

.ci/bb/daint-cscs/test.all.pgi

.ci/bb/levante-dkrz/init.sh

.ci/bb/run_all.sh

.gitlab-ci.yml

CMakeLists.txt

ChangeLog

NEWS

app/CMakeLists.txt

app/cdi.c

configure.ac

doc/tex/cdi_cman.tex

doc/tex/cdi_fman.tex

src/CMakeLists.txt

src/cdf.c