Date: 7-Aug-2020 - initial release
updated include_reference function.
Date: 17-Jun-2020 - initial release
Initialization of the stack has been modified
External config support moved to stack initialization optional parameters
changes incorporated in Asset class.
changes incorporated in the entry class.
Changes incorporated in the Query class.
Date: 18-Nov-2019 - beta release
Beta release for the contentstack-python SDK for Content Delivery API