change fullTraces to fullStacks in execute. factor out a getMessageForExample, and don't just use toString if the msg is null, say <exception class> was thrown.
change fullTraces to fullStacks in execute. factor out a getMessageForExample, and don't just use toString if the msg is null, say <exception class> was thrown.

hubertp/scalatest,hubertp/scalatest,hubertp/scalatest