fix: cleaned prov encoding to store dictionaries and lists as prov json
enh: added new options to apply volume transform
fix: changed warning to logging
api: changed smoothing sigmas to accept float in antsRegistration
enh: updated antsApplyTransforms to accept input image type
tst: fixed ants doctests to indicate smoothing sigmas
fix: updated ants example to use new parameters from ants
Merge pull request #647 from satra/fix/cherrypicked

Fix/cherrypicked