Bug in the generation of the summaries

Hi,
I have found a problem in this plugin, in the generation of the summaries. When, in the beginning of a post you have a link, this is corrupted by the summary generation. This problem occurs line 252 (V2.1) by calling $content = str_replace('.', '. ', $content); This command will replace something like <href="xxx.yyy"> in <href="xxx. yyy">.

So I have commented the line to be able to use the links without having to click on the “read more” link.