```
$ git grep -l Sirupsen | grep -v vendor | xargs sed -i '' 's:github.com/Sirupsen/logrus:github.com/sirupsen/logrus:g'
$ gofmt -s -w app
$ gofmt -s -w common
$ gofmt -s -w probe
$ gofmt -s -w prog
$ gofmt -s -w tools
```