Fix issue with illumination values being lower than the min_illum config
This prevents trying to find log of a value with no solution, and ignores any illumination values read from the device that are below the min_illum config value.
Fixes #4
The 17.0 major release is coming on May 16, 2024! This version brings many exciting improvements to GitLab, but also removes some deprecated features. We are introducing three breaking change windows during which we expect breaking changes to be deployed to GitLab.com. You can read more about it on our blogpost. The first breaking change window begins 2024-04-22 09:00UTC and ends 2024-04-24 22:00UTC.
This prevents trying to find log of a value with no solution, and ignores any illumination values read from the device that are below the min_illum config value.
Fixes #4