metricfu/metric_fu — pull request #193 by szemek (2014-01-18 17:36:58+00:00)
Title: Activate churn/calculator

I use `churn (0.0.35)` and I updated `metric_fu` to the newest version (4.7.1), then I got this error:
```
churn metric not activated, cannot load such file -- churn/churn_calculator
```
Here is a solution for error I got.