Undo __future__ import for type annotations, which is incompatible with python 3.6

expected to close #20 (closed): Rolling back the import of annotations from __future__ due to being incompatible with python 3.6

requested review from @plewnia

assigned to @daab

mentioned in issue #20 (closed)

added 2 commits

• 7a19b9ae - Fixed syntax error
• 84e7ee70 - Fixed merge conflict

Compare with previous version

enabled an automatic merge when all merge checks for 84e7ee70 pass

merged

mentioned in commit 4634bccd