Change logs for logback source package in Zesty

logback (1:1.1.9-1) unstable; urgency=medium

  * Team upload.
  * New upstream release

 -- Emmanuel Bourg <email address hidden>  Mon, 23 Jan 2017 18:30:07 +0100

logback (1:1.1.8-1) unstable; urgency=medium

  * Team upload.
  * New upstream release
  * Build with Maven instead of Ant
  * Removed the Google ads from the documentation
  * Switch to debhelper level 10

 -- Emmanuel Bourg <email address hidden>  Sun, 11 Dec 2016 22:34:52 +0100

logback (1:1.1.7-2) unstable; urgency=medium

  * Team upload.
  * Depend on groovy instead of groovy2

 -- Emmanuel Bourg <email address hidden>  Fri, 20 May 2016 14:24:54 +0200