In the options for this addon, there is a selection box for user groups. Selecting user groups in this option enables them for the addon. After enabled, event organizers can select which user groups they want an event to be visible to.
You can now export all future events from a calendar in ICS/CSV format. You can use this as a "subscribe" endpoint in your preferred calendar software.
Event images will now be called correctly if you are using a CDN. This function may not work properly if you are deleting the local images from your /data folder after syncing to the CDN. BOTH files must exist (since file checking is done locally), but the user will be served the CDN version.