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changed setReplyPath to setReturnPath
Cleaned up d96b764, detect mime type automatically
Cleaning up e4c00bf, a more simple loop
don't stomp, but still retain array support
adding multiple recipient support
Add attachment support (untested).
Made Email class extensible
Completely refactored Email class to be factory based, rather than st…
Fixed sendmail - thanks tterragcnoom!
Basic port of 2.3.x email helper