`iso8601utils` on Python 3.10: `from collections import Iterable` fails

[movermeyer]

Iterable was moved from collections into collections.abc.

See the deprecation warning in Python 3.9

$ python3.9
>>> from collections import Iterable
<stdin>:1: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3, and in 3.10 it will stop working

This means that you currently cannot install iso8601utils on Python 3.10:

$ python3.10
Python 3.10.0 (default, Oct  4 2021, 22:09:55) [GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from iso8601utils import parsers
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3.10/dist-packages/iso8601utils/__init__.py", line 1, in <module>
    from iso8601utils.interval import interval
  File "/usr/lib/python3.10/dist-packages/iso8601utils/interval.py", line 1, in <module>
    from collections import Iterable
ImportError: cannot import name 'Iterable' from 'collections' (/usr/lib/python3.10/collections/__init__.py)