v4.1
- Cleanup: removed overridden CSS declaration (border-radius: 0 0 0 0)
- Cleanup: removed unused 'warn' log style
- Cleanup: removed redundant typeof guard for activeFixedState
- Cleanup: consolidated duplicate mouseleave handlers on collapse button
v4.2
- Changed: replaced localStorage with GM_setValue/GM_getValue for settings persistence
- Settings now stored via userscript manager (more reliable, syncs across browsers if supported)