[Fixes #26288755] Resolves MultiJSON parse error with Export API responses
[Finish #26289729] Updating the outdated Export API docs
[#26288755] Only change required to make this work again is the `format :plain` line.
[#26288755] Updating the exporter test to include all export api methods
Add support for BCC in Mandrill API
fix case when BCC is not included
better fix for nil BCC
bump version for Heroku?