isolver/psychopy — pull request #6 by pedmiston (2014-02-15 17:45:53+00:00)
Title: Expand user_variables into individual columns of the session meta data

Session user variables were output to the session meta data in a dict/string format. Now all user variables are output in the session meta data as individual columns.

Assumptions:

* dict/string format will always be json-interpretable
* the user variables are consistent (i.e., the columns/dict keys are determined from the first entry in the session meta data)