WARNING: The extension was developed by another person, not the OP. For official support, consider opening an issue on its GitHub page, or sending an e-mail to the address seen in commits.
Official GitHub page for the extension is available here, together with installation instructions.
Vineless is a replacement extension for WidevineProxy2 and PlayreadyProxy2. Unlike the mentioned extensions, key systems are implemented entirely in the extension, and acquired keys are then proxified to ClearKey. For average user it means PlayReady support in non-Edge browsers.