Added a prefix setting so you can change the prefix for localStorage items (more info here and here)
Fixed an issue that was introduced in v1.2.10 when we added the Proxy library to make the window.parleySettings object send out events whenever a value changes. Our Proxy polyfill was conflicting with other Proxy polyfills on the website our chat was implemented on. Our Proxy polyfill now gets called as ParleyProxy() instead of Proxy().
Added a scope setting that restricts the communication the serviceWorker has with different pages. (more info here and here)