* Add support for Rails via ActiveMailer * Add `send_raw` method to send HTML email without a template
0.1.6
* Raise ruby errors when an error is encountered in the API
0.1.5
* Use new `/messages` endpoint
0.1.4
* Do not require `from` in api call to allow for default from in template * Do not require `subject` in api call to allow for default subject in template * send `Sdk-Version` header for tracking of SDK usage and future deprection warnings
0.1.3
* change `user_variables` to `template_variables` in API call
0.1.2
* add `template_info` to fetch the template body and see waht variables are defined on a template