(Animated) Color stripes generator.

Usage:
/rr
/rr_matching
/anim can also be appended to the end of path for APNG output
Parameters:
basehsv: hue integer value in range 0-360. Only works in rr_matching (example: /rr_matching?basehsv=200)
denominator: integer, defines the frame delay of an APNG in anim mode (example: /rr_matching/anim?basehsv=235&denominator=4)

RR Gen by sergds (go1.20.3): last updated 1 June 2023