Due to the increased availability of legal streaming sites in the US in recent years, I no longer actively use flexget, and have not updated it since July.
Getting it synced back up to the latest upstream version would require packaging several additional python libraries, and I don't have the motivation to do so. It is probably easier to run this in a virtualenv anyway. Feel free to pick it up. If nobody updates it, I will mask it for removal in a couple months to prevent dependency problems moving forward. I have also dropped maintenance of the PyRSS2Gen package, on which flexget depends.