Very nice! It would be preferable to have the plugin settings under the Settings menu – it’s there for a reason, it’s annoying to have the sidebar full of rarely used settings. With this plugin, I’m going to adjust the settings once and will never touch them again, so it’s not necessary to have the settings menu on the sidebar top level.
(There’s a typo on the settings screen: it says “Warp Long Line?” but should probably say “Wrap Long Line?”.)
Thanks!