Fix issue #24
Created originally on Bitbucket by paugier (Pierre Augier)
Was already merged in Bitbucket before import, marked as merged by the import user
- Use extast.unparse to avoid a bug (incompatibility gast & astunparse)
- Version 0.3.0.post0
- Added tag 0.3.0.post0 for changeset 3cdf90bc4c5a