Add 'lofar-cwl/' from commit '6b96834d [formerly 903fb922] [formerly 56850c7d]'

git-subtree-dir: lofar-cwl
git-subtree-mainline: 0813b065 [formerly 3609027a] [formerly b197bdfa]
git-subtree-split: 6b96834d [formerly 903fb922] [formerly 56850c7d]

Former-commit-id: b70e6356
Former-commit-id: 73e2b508