Feature/explain pred

[BaxterEaves]

Added

• Added plot.state function in pylace to render PCC states
• Added analysis.explain_prediction in pylace to explain predictions
• Added plot.prediction_explanation in pylace to render prediction explanations
• Added analysis.held_out_uncertainty in pylace
• Added analysis.attributable_[neglogp | inconsistrncy | uncertainty] in pylace to quantify the amount of surprisal (neglogp), inconsistency, and uncertainty attributable to other features

Changed

• Updated all packages to have the correct SPDX for the Business Source License
• Removed internal implimentation of logsumexp in favor of rv::misc::logsumexp
• Update to rv 0.16.2
• Impute and prediction uncertainty are the mean total variation distance between each state's distribution and the average distribution divided by the potential max: (n-1) / n, where n is the number of states. This normalization is meant to ensure that the interpretation is the same regardless of the number of states -- zero is lowest, one is highest.

Fixed

• Fixed issue that would cause random row order when indexing pylace Engines by a single (column) index, e.g., engine['column'] would return the columns in a different order every time the engine was loaded

[schmidmt]

I learned something here! I didn't know about f64::total_cmp. Thanks!

[Swandog]

I didn't see anything that looked like a problem, so LGTM!

[schmidmt]

😅 Done! Looks great!