Add regression spec for adding an attachment before the content type for issue #459
Add regression spec for adding an attachment before the content type for issue #459

kaineer/mail,wktk/mail,pushrax/mail,wktk/mail,EdwardPantoja/mail,smallspark/mail,agaridata/mail,EdwardPantoja/mail,missive/mail,0x00evil/mail,schneems/mail,mikel/mail,benmmurphy/mail,jeremyevans/mail,planio-gmbh/mail,schneems/mail,owenr/mail,yujinakayama/mail,kaineer/mail,jeremyevans/mail,0x00evil/mail,zacholauson/mail,kert-io/mail,kjg/mail,schepedw/mail,pjskennedy/mail,benmmurphy/mail,pjskennedy/mail,agaridata/mail,jeremy/mail,carsonreinke/mail,jonkgrimes/mail,kert-io/mail,jonkgrimes/mail,pascalbetz/mail,zacholauson/mail,kjg/mail,carsonreinke/mail,Schniz/mail,jeremy/mail,pushrax/mail,schepedw/mail,smallspark/mail,kainlite/mail