More information on ?expand=versionedRepresentations and sprint toString() deprecation

[Nimish Nalan]

1. What is the complete information that we get through: rest/api/2/issue/<issueid>?expand=versionedRepresentations
2. Will all the values in "1" be the values for all fields that we used to get for older version of jira?
3. For which fields will we get: "2". Right now I am able to get the information for "2" for sprint field only
4. "

   From 1 April 2017, Jira REST API responses that include the Sprint custom field type will no longer return string representations of sprints in the body. This data will still be available in its proper JSON representation wherever a string was previously expected.

   "
   -- it is specified 2017. Is that a mistake?
   --And after the deprecation we will be getting the response in the JSON format for normal issue request(without ?expand=versionedRepresentations. Right?
5. Not this is for Jira cloud. From which version of Jira Server(On-premise version) will this get introduced?