description doesn't need double-parentheses, and add missing space at the
end of the line that otherwise causes "persistent" and "pickle" to merge into
a single word
change url to point to the GitHub repo as the current URL forwards to a host
that's no longer serving anything
descriptiondoesn't need double-parentheses, and add missing space at the end of the line that otherwise causes "persistent" and "pickle" to merge into a single wordurlto point to the GitHub repo as the current URL forwards to a host that's no longer serving anything