Code cleaning, coding standard, accidentally overwritten copyright info restored
Added Mandrill driver
Added mail priority
Use Arr::keyval_to_assoc for merge var building
CS fix
Dont mess with extra_headers
Throw exception on inline attachments
Make it clear: we only have a problem with non image attachments
Docblocks added
Merge pull request #49 from sagikazarmark/1.8/develop

Added Mandrill driver