readme mention korath changes

Author: leklachu

README

@@ -15,3 +15,5 @@ First play Endless Sky (https://github.com/endless-sky/endless-sky/). I recommen
 To play, download this repository (or a release folder) into your plugins directory for Endless Sky. You probably already know how. If not, let me know, and I'll get round to updating this readme with the instructions.
 
 You need Endless Sky minimum version 0.9.15, which at time of writing is the continuous build in the main Endless Sky project.
+
+- Changes to the Korath have impacted this plugin. The current version tracks the current git repository for endless sky. (2022-09-04)