Refactors particle system from yesterday:

TODO

Video Info

coding train link: https://thecodingtrain.com/tracks/the-nature-of-code-2/noc/4-particles/3-particle-inheritance video in playlist: https://www.youtube.com/watch?v=44RSr49m6LU&list=PLRqwX-V7Uu6ZV4yEcW3uDwOgGXKUUsPOM&index=36 code: https://editor.p5js.org/codingtrain/sketches/QRzgzQLnQ

Instructions

Click to make a new particle emitter at the mouse location.