Uncertainpy

Update Chaospy dependency to version 4

Updated dependencies.

Updates dependencies and removes support for python 2.

This release adds support for the new Chaospy (version 3).

This release adds more options for how to find spikes, various bugfixes, and correct PyPI release.

Spikes now includes the first point before it crossed the onset threshold and the first point after it descended below the threshold,

This release adds more options for how to find spikes, as well as various bugfixes, and a few quality of life improvements.