Updating Engagement Framework Criteria:
Replaced `days_since_install` with `time_since_install`
Added `is_update` for `version` and `build`
Updated test data to use `time_since_install` vs. `days_since_install`
Added tests for `is_update` version and build
Added tests for new Upgrade Message criteria json
Added CodePointInvokesBuild and InteractionsInvokesBuild
Added an API method to set the initial useMessageCenter setting. This will be overridden by the server-based configuration when it is downloaded.