Changes to Register email channel

• warning

  removed the request property tags

• info

  added the new optional request property tag_operations

This list may be incomplete.

• breaking

  the channel/commercial_opted_in request property format changed from no format to date-time

• breaking

  the channel/commercial_opted_out request property format changed from no format to date-time

• breaking

  the channel/transactional_opted_in request property format changed from no format to date-time

• breaking

  the channel/transactional_opted_out request property format changed from no format to date-time

This list may be incomplete.