Physics Asset Editor Updates in 4.18

Charles and Tom show off our Physics Asset Editor (formerly known as PhAT), which has been completely overhauled to significantly improve usability and expand functionality! The UI has a new look and feel with an upgraded Skeleton Tree view that provides better filtering and display of all scene elements and a new Graph view for setting up constraints between bodies visually using nodes.
 * Chain simulated physics
 * Body fat simulation

Meta

 * Bad audio for Thomas Sarkanen.