Incorrectly finding blockquotes embedded in fenced code blocks

[gerv]

If you have a fenced code block with a line which begins with a "<" character, it gets incorrectly treated as a blockquote. This can be reproduced with the latest Text::Markdown from Github.

The following code demonstrates the problem (you'll need to remove the backslash from the start of the fenced code block markers before running the code):

#!/usr/bin/perl -w

use Text::Markdown 'markdown';

my $text = <<END;
\```
this is a fenced code block
> which contains a line which looks like a blockquote because it begins with greater-than
\```
END

my $html = markdown($text);

print "Text::Markdown version: " . Text::Markdown->VERSION . "\n\n";
print $html;

Remove the ">" to see the rendering as it should be.