Release v1.26

This release brings a significant code refactor to introduce a better scheduler design and a more straightforward progress manager. The more significant change is actually the need for specifying downloaders (i.e., danzo http URL instead of danzo URL). This is a calculated change to make integration of future downloaders easier.

Old way required customizations to be passed via ||custom in the URL, which was not intuitive and scalable, the new method uses per-subcommand flags, making it easy to formulate commands.

Additional features were added: m3u8 downloader now supports multiple threads and URLs that resolve to "moved permanently" type redirection are now automatically handled.