Import lowdown-0.1.9 as textproc/lowdown.

lowdown is just another Markdown translator. It can output traditional
HTML or a document for your troff type-setter of choice, such as
groff(1), Heirloom troff, or even mandoc(1). lowdown doesn't require
XSLT, Python, or even Perl - it's just clean, secure, open source
C code with no dependencies.

(wiz)