refs https://github.com/TryGhost/Team/issues/765
Support for multiple products means we can no longer map a members state
to a csv row using just the `complimentary_plan` option. Instead we must
include the product(s) that a member has. This ensures that we can read
and write this data from/to csv files.
no refs
The data structure for subscriptions object on member has changed in 4.x from` stripe.subscriptions` to direct `subscriptions`, the change here updates parsing of subscriptions data
no issue
- This fixes a problem where files are skiped form the @tryghost/members-csv package
- Also this follows the file structure convention with other packages
