Squashed 'lib/python/cidl/' changes from 43f0204..ce1addc

ce1addc Normalize line endings
ce3613c Fix typo
6131fd6 Add. gitattributes

git-subtree-dir: lib/python/cidl
git-subtree-split: ce1addcfac6987748015fa2983bededfc10640f2
Update cidl