Configuration object / knob

[tony]

Their should be a configuration object

Default / regular usage should never need to use it

But for any implied defaults, their should always be a way to override them. These should be tested and documented, with examples

The configurations should also allow overriding at the object level, in an overlay / patching style. Where the uppermost configuration knows are inherited but can be overridden at a lower level

Similar to pytest fixture overrides, except dealing with a configuration object specifically, rather than tests

Though these configuration knobs would make various types of testing easier

And also, the "override" at the object level would be perfect for context managers