balanced/balanced-python — pull request #121 by rserna2010 (2014-06-16 18:41:14+00:00)
Title: Edit cancel function to void holds

https://docs.balancedpayments.com/1.1/api/card-holds/#void-a-card-hold wasn't actually working for the python library. The holds object voided_at would just return as null when you called cancel.