This fixes deprecation warnings on Python 3.3 to 3.9 and code/test breakages from py3.10+ and resolves #331.
The Sequence imports in the GAMMA text proxy are fine. Those imports grab Sequence via an alias that appears to resolve correctly to collections.abc.Sequence.
I also tweaked a few lines to fix/remove linter warnings.
This fixes deprecation warnings on Python 3.3 to 3.9 and code/test breakages from py3.10+ and resolves #331.
The Sequence imports in the GAMMA text proxy are fine. Those imports grab Sequence via an alias that appears to resolve correctly to
collections.abc.Sequence.I also tweaked a few lines to fix/remove linter warnings.