Release traprain version 0.2019pre.0-0co4

Signed-off-by: Emanuele Aina <emanuele.aina@collabora.com>

debian/changelog

+traprain (0.2019pre.0-0co4) apertis; urgency=medium
+
+  * debian/control: Depend on the hotdoc-0.8 branch
+
+ -- Emanuele Aina <emanuele.aina@collabora.com>  Wed, 08 Jan 2020 16:02:14 +0000
+
 traprain (0.2019pre.0-0co3) apertis; urgency=medium
 
   * debian/control: add dh-apparmor as build-deps.