Have anyone done with the last version(0.9.2) with lettre crate, because in my practice book it's use v0.7 so it's different in the point of trait. In v0.7 lettre::SendableEmail in Trait but in in v.0.9.2 lettre::SendableEmail in struct. And I want to impl Trait. If anyone have done with this please share. Thank you very much.