[SSG] Parse markdown shownotes.

nova.py

@@ -11,6 +11,7 @@ import subprocess
 import sys
 
 import jinja2
+import markdown
 
 
 def gen_name(date, slug):
@@ -53,7 +54,7 @@ class Episode:
         self.date = date
         self.slug = slug
         self.title = title
-        self.show_notes = show_notes
+        self.show_notes = markdown.markdown(show_notes)
         self.video = video_src
 
     def render(self, template, thumbnail_src):