Changes to Publish to Social

added the new optional request property tags

added the new optional request property platforms

the request property accounts became optional

added the non-success response with the status 402

added the media type application/json for the response with the status 401

added the media type application/json for the response with the status 429

added the non-success response with the status 400

added the non-success response with the status 403

added the non-success response with the status 404

added the non-success response with the status 500

removed the request property isDraft

added the new optional request property scheduled_for

added the new optional request property status