We've released a couple of updates today which have been a long time coming.
Firstly, you can now use the API to create a campaign from a template, which has been a highly requested feature for a long time now. I'm sorry it's been so long coming, but hopefully it will be a very useful addition to the API for you all.
Secondly, we've added support for unsuppressing an email address (removing an email address from a client's suppression list) in the API, which has been requested for quite a while now too.
As always, all our open source API wrappers have been updated to support these new additions to the API.