Corrected one instance of "epochs" to "rounds" in a Markdown cell

Resolve plotting errors by detaching tensors

Fixed string to int FutureWarning

Added an "explore CatBoost" exercise at the end

correct "penultimate" element to "final" in quick-sort algo comment

Small copy changes post-class

Major updates to code and markdown for 2024

Add row/column clarification to .sum() comments per @toheedakhtar

Minor copy adjustments made during O'Reilly class

Elaborate intro to Measures of Central Tendency

fixed scalar-extraction issue caused by statsmodel libo update

Added minor annotations to assist moving back to the slides at appropriate times.

Added relatively minor comments

Add "practical ML appns" to pedagogy approach

Update book timeline