parse vars in dont_know method
[config] Fix error in extra module processing
Merge pull request #253 from cerealcable/master

Parse Variables in dont_know method
[url] Fix .title command per issue #219

Also use callbacks per issue #117
[youtube] Modify to enable .title callback and PEP8ify
Merge branch 'master' of github.com:embolalia/willie
[url] Fix error when .title is handled by a callback
[reddit] PEP8ify and enable callbacks for info
Merge remote-tracking branch 'remotes/upstream/master'