Log Message:
snownews: update to 1.7

changes:
    Resuming active maintenance.
    Use curl to load feeds.
    Store feed list as OPML.
    Move configuration and cache to XDG dirs.
    Support Atom feeds.
    Support content:encoded tag in RSS feeds.
    Display UTF8 text.
    Redirect stderr to logfile.
    Fix newsitem text scrolling.
    Fix various build failures.
    Add DESTDIR support.
    Remove obsolete scripts.