Originally written by @MarkusA380, it's been dormant for a few years. @whale_2 did do some maintenance on it, it hasn't been updated since march, 2020. I did hear from @markusa380 on Github, but he never responded after the first message. I submitted a PR to him, but it seems to have died a stillborn death.   So I decided to adopt this. Original thread is here:  https://forum.kerbalspaceprogram.com/index.php?/topic/102277-18-persistentrotation-186/ I've made the following changes