Update Pylint and implement Black on all libraries.

[kattni]

The purpose of this issue is to act as a master issue for tracking issues filed on each library as we move through updating to the latest version of Pylint and implement Black.

Issues will be filed when the situation requires a judgement call, e.g. determining whether to go with Pylint or Black when they disagree, or whether to fix or disable a particular failure. An issue will be filed on the current working library, and will reference this issue.

We can update this issue as needed.

[kattni]

This is completed.