Good Morning Maguero74,
The REST documentation is currently up to date regarding the edit history options. If a given entity is not currently included in the list of accessible fields, that does not mean it will never be included, it is just not accessible at this time.
In terms of searching by date, the edithistory table has a dateadded value, which could be used as a parameter for your REST calls. You can find more about the individually available fields for each entity type within the Entity Reference section of our online documentation. http://bullhorn.github.io/rest-api-docs/entityref.html#activitygoal