Bump version to 1.7.4a
Bump version to 1.7.4a

PrecisionNutrition/premailer,Guestfolio/premailer,will-in-wi/premailer,academia-edu/premailer,ministrycentered/premailer,academia-edu/premailer,zurb/premailer,danimashu/premailer,danimashu/premailer,PrecisionNutrition/premailer,will-in-wi/premailer,constantcontact/premailer,ministrycentered/premailer,r-shah/java-premailer-wrapper,Guestfolio/premailer,ale7714/premailer,constantcontact/premailer,r-shah/java-premailer-wrapper,r-shah/java-premailer-wrapper,ale7714/premailer,thebeansgroup/premailer,thebeansgroup/premailer