In rss we have tag <link>https://example.com/articles/some-amazing-article</link>,
but in Atom we have <link href="https://example.com/articles/some-amazing-article"/>.
So, lets extract it from href attr & put into `url` property.

Fixe an issue with parsing xml with CDATA, for example:

<title><![CDATA[XXX]]></title>

Added user agent which is sometimes required.

To avoid 'It is not yet possible to assign complex types to properties' error in adjustNamespaces()

RSS has items in $feed->items, Atom in $feed->entry

Set the cURL option CURLOPT_ENCODING to "" to tell it to automatically
detect different encodings and decode the contents if possible

trim feed input to remove illegal space or linebreaks in XML documents

Fix 'curl_setopt(): CURLOPT_FOLLOWLOCATION ...'

Update feed.class.php

adding curl option CURLOPT_FOLLOWLOCATION for redirection

Pretty readme file