Upload to Bionic.

debian/changelog

@@ -1,4 +1,4 @@
-lxqt-qtplugin (0.12.0-4ubuntu1) UNRELEASED; urgency=medium
+lxqt-qtplugin (0.12.0-4ubuntu1) bionic; urgency=medium
 
   * Cherry-pick an upstream commit because the upstream release cycle is too
     slow:
@@ -6,7 +6,7 @@ lxqt-qtplugin (0.12.0-4ubuntu1) UNRELEASED; urgency=medium
       + remember-view-mode.patch
       + Upstream commit dfa18ac.
 
- -- Simon Quigley <tsimonq2@ubuntu.com>  Mon, 05 Feb 2018 21:23:14 -0600
+ -- Simon Quigley <tsimonq2@ubuntu.com>  Mon, 05 Feb 2018 21:33:02 -0600
 
 lxqt-qtplugin (0.12.0-4) unstable; urgency=medium