We have recently made a decision to deprecate private impediment and have all the impediment in the system public. Mode details and reasons behind this decision is available in our blog: https://www.targetprocess.com/blog/2017/03/deprecating-private-impediments/
In the version 3.11.2 we introduced ability to restore deleted Projects and Users. It brought some changed to Undelete API.
As you probably know we're working on a new History API at the moment. Because of that, we had to bring a little change in the existing History API and rename Histories collections to SimpleHistories collections.
Welcome to the new developer hub and documentation for Targetprocess!