P5.js implementation of the BASIC "10PRINT" concept.
10 PRINT CHR$(205.5+RND(1)); : GOTO 10

Introduced here are: vertical and horzontal elements, random scaling
and background, color evolution and the occasional ellipse.

Thanks to Dan Shiffman's Coding Challenge #76 for the inspiration.
See 10print.org for more about 10PRINT.