Forked from http://lightsquid.sourceforge.net/ lightsquid v1.8
Refer to: Lightsquid Stop Working in 2021
Fix the hardcoded year 2020 bug.
lightsquid v1.8.1 download link: https://github.com/finisky/lightsquid-1.8.1/blob/master/lightsquid-1.8.1.tar.gz