improperly escaping URL in link
my code looks like:
[unsubscribe](%mailing_list_unsubscribe_url%)
and when I run it thru markdown is converts the code to:
<p><a href="%25mailing_list_unsubscribe_url%25">unsubscribe</a></p>
the %
should not be escaped per https://daringfireball.net/projects/markdown/dingus