Add python-Twiggy 0.4.5.
Add python-bugzilla 1.1.0.
Bump Jinja2 to version 2.7.3.
Add python-taskw 0.8.6.
Add python-bugwarrior 1.0.2.
Merge pull request #5007 from nbp/bugwarrior

Add Bugwarrior and its dependencies.