add expunge command to mailbox
add expunge command to mailbox

bartoszkopinski/gmail,nancyhawa/gmail,awakia/gmail,stefanobernardi/gmail,jamescallmebrent/gmail,nu7hatch/gmail,trailsuite/gmail,vu0tran/gmail,ianmargolis/gmail,Yesware/gmail,silo-co/gmail,preact/gmail,kitlangton/gmail