Add 'lofar-cwl/' from commit '23d20ceb...

Add 'lofar-cwl/' from commit '23d20ceb [formerly 6b96834d] [formerly 903fb922] [formerly 5739f785 [formerly 56850c7d]]'

git-subtree-dir: lofar-cwl
git-subtree-mainline: 09c9e890 [formerly 0813b065] [formerly 3609027a] [formerly 79f8e525 [formerly b197bdfa]]
git-subtree-split: 23d20ceb [formerly 6b96834d] [formerly 903fb922] [formerly 5739f785 [formerly 56850c7d]]

Former-commit-id: a80456be [formerly b70e6356]
Former-commit-id: 73e2b508
Former-commit-id: 83cec433