Log Message:
Update to 1.58

Upstream changes:
1.58    2016-02-08
    - Merge a pull-request regarding the handling of isPermaLink:
        - https://github.com/shlomif/perl-XML-RSS/pull/2
        - Thanks to @dwmc15873 for the changes.

1.57    2015-12-13
    - Update an old E-mail address for Shlomi Fish.