## Changelog

**05/11/2014**

    - added support for counting the number of students who have provided an answer to the question being analyzer, the output is returned in the fields "responses" and "user_ids"

**04/29/2014**

  - added support for Essay question statistics with the following metrics:
    1. "graded"
    2. "full_credit"
    3. "point_distribution"