impl IntoMessage for Message

[soywod]

I need the exact conversion method as defined here:

mail-send/src/smtp/message.rs

Lines 283 to 285 in d97850d

	#[cfg(feature = "builder")]
	impl<'x, 'y> IntoMessage<'x> for MessageBuilder<'y> {
	fn into_message(self) -> crate::Result<Message<'x>> {

but from a mail_parser::Message. Would you accept a PR based on the same logic, behind a mail-parser cargo feature?

[mdecimus]

Sure!

[soywod]

Could you release a new minor version, if possible?

[mdecimus]

Done