cine.py broken by python 3.9+

[leonavery]

In python 3.9+, Iterable can no longer be imported directly from collections. It has been moved to collections.abc. Thus this line:

 from collections import Iterable

in cine.py is broken. It needs to be

from collections.abc import Iterable

presumably conditional on the python version.

[marscher]

It seems this has been fixed on master already, when can users expect a new release?

[nkeim]

Closing now that #412 is active.