added better icons to old bytes
lecture slides on byte 4
working version of byte 4
lecture material for 2/20
Updates to lectures for statistics and byte 4
slides for 2/24 (correlation and regression)
updated with references to source material
Checked for 'bad' animations
added material on how to show causality and std error
Lectures through end of February

10 (machine learning) is in progress.
Updated version of lectures
lecture for machine learning on algorithms
Lecture for Tues Mar 4 on testing and training machine learning
Updated lecture order
fixed problems with false positives and negatives
Byte 5 sample code
Lectures Updated
Small correction in features.
deleted json files because they were too big
updated lecture