Imported Upstream version 2.2
Merge tag 'upstream/2.2'

Upstream version 2.2

* tag 'upstream/2.2':
  Imported Upstream version 2.2
Add ChangZhuo Chen (陳昌倬) as uploader
Use xvfb-run to setup test environment

Closes: #746099
Add debian/gbp.conf
ibus-cangjie (2.2-1) unstable; urgency=medium
Change arch to all (#750881) and update my email.
Commit changes in ChangZhuo Chen 2.2-2 package that he uploaded to mentors.
Thanks czchen!