- Add http.put(), http.delete(), http.patch() shortcut methods
- Add persistent cookie jar per extension
- Add http.clearCookies() to clear session
- Fix User-Agent header respect (no longer overwritten)
- Return multi-value headers as arrays (Set-Cookie support)
- Auto-stringify objects in POST/PUT/PATCH body
- Add response.ok and response.status properties
- Update documentation with YouTube Music example