version bump, also better matching for avatar replacement

fix for scroll bar disappearing

update readme

add separate setting for server URL and overlay URL

include video ID in remote post

switch back to no-iframe, update readme

fix membership and superchat display

include version in remote requests

version 0.3.1

hide get overlay url button when clicked

* adds a way to show a banner image
* hide the aspect ratio and get overlay url button when clicked