Variation of S. Henderson's n-Body Simulation

Added some features for Silas Hendersons n-body simulation. Please refer to link at bottom of Description

Took the liberty to add some fun features to the nbody function to make it more "cosmic".

Added features

• optional rotation with adjustable distance exponent (i.e. 1/r^k)
• optional central massive object
• optional collision - inelastic
• zoom - allows to go to center where the "action" is or to zoom out to find bodies that have been flung out far
• color per body's mass, or let's say "star class"
• option to make all bodies same massOriginal by Silas Henderson (2021). N-body animation

(https://www.mathworks.com/matlabcentral/fileexchange/69834-n-body-animation)

MATLAB Central File Exchange. Retrieved May 6, 2021.