Squashed 'cwltool/schemas/' changes from 19ca76c..fd37b4b
Squashed 'cwltool/schemas/' changes from 19ca76c..fd37b4b

fd37b4b Add cwlVersion to draft-2 spec.

git-subtree-dir: cwltool/schemas
git-subtree-split: fd37b4ba07a21c220bf9b17078debd2b7e4ab90b

common-workflow-language/cwltool,common-workflow-language/cwltool,SciDAP/cwltool,jeremiahsavage/cwltool,chapmanb/cwltool,dleehr/cwltool,jeremiahsavage/cwltool,common-workflow-language/cwltool,dleehr/cwltool,dleehr/cwltool,SciDAP/cwltool,chapmanb/cwltool,dleehr/cwltool,chapmanb/cwltool,SciDAP/cwltool,jeremiahsavage/cwltool,chapmanb/cwltool,SciDAP/cwltool,jeremiahsavage/cwltool