Update deprecated imports

examples/asyncstd1_smtp_starttls.rs

@@ -1,6 +1,6 @@
 use lettre::{
     transport::smtp::authentication::Credentials, AsyncSmtpTransport, AsyncStd1Executor,
-    AsyncStd1Transport, Message,
+    AsyncTransport, Message,
 };
 
 #[async_std::main]

examples/asyncstd1_smtp_tls.rs

@@ -1,6 +1,6 @@
 use lettre::{
     transport::smtp::authentication::Credentials, AsyncSmtpTransport, AsyncStd1Executor,
-    AsyncStd1Transport, Message,
+    AsyncTransport, Message,
 };
 
 #[async_std::main]

examples/tokio02_smtp_starttls.rs

@@ -4,8 +4,8 @@
 use tokio02_crate as tokio;
 
 use lettre::{
-    transport::smtp::authentication::Credentials, AsyncSmtpTransport, Message, Tokio02Executor,
-    Tokio02Transport,
+    transport::smtp::authentication::Credentials, AsyncSmtpTransport, AsyncTransport, Message,
+    Tokio02Executor,
 };
 
 #[tokio::main]

examples/tokio02_smtp_tls.rs

@@ -4,8 +4,8 @@
 use tokio02_crate as tokio;
 
 use lettre::{
-    transport::smtp::authentication::Credentials, AsyncSmtpTransport, Message, Tokio02Executor,
-    Tokio02Transport,
+    transport::smtp::authentication::Credentials, AsyncSmtpTransport, AsyncTransport, Message,
+    Tokio02Executor,
 };
 
 #[tokio::main]

examples/tokio1_smtp_starttls.rs

@@ -4,8 +4,8 @@
 use tokio1_crate as tokio;
 
 use lettre::{
-    transport::smtp::authentication::Credentials, AsyncSmtpTransport, Message, Tokio1Executor,
-    Tokio1Transport,
+    transport::smtp::authentication::Credentials, AsyncSmtpTransport, AsyncTransport, Message,
+    Tokio1Executor,
 };
 
 #[tokio::main]

examples/tokio1_smtp_tls.rs

@@ -4,8 +4,8 @@
 use tokio1_crate as tokio;
 
 use lettre::{
-    transport::smtp::authentication::Credentials, AsyncSmtpTransport, Message, Tokio1Executor,
-    Tokio1Transport,
+    transport::smtp::authentication::Credentials, AsyncSmtpTransport, AsyncTransport, Message,
+    Tokio1Executor,
 };
 
 #[tokio::main]

tests/transport_sendmail.rs

@@ -46,7 +46,7 @@ mod test {
     #[cfg(feature = "tokio02")]
     #[tokio::test]
     async fn sendmail_transport_tokio02() {
-        use lettre::{AsyncSendmailTransport, Tokio02Executor, Tokio02Transport};
+        use lettre::{AsyncSendmailTransport, AsyncTransport, Tokio02Executor};
 
         let sender = AsyncSendmailTransport::<Tokio02Executor>::new();
         let email = Message::builder()

tests/transport_stub.rs

@@ -9,6 +9,7 @@ mod test {
     #[test]
     fn stub_transport() {
         use lettre::Transport;
+
         let sender_ok = StubTransport::new_ok();
         let sender_ko = StubTransport::new_error();
         let email = Message::builder()
@@ -26,7 +27,7 @@ mod test {
     #[cfg(feature = "async-std1")]
     #[async_std::test]
     async fn stub_transport_asyncstd1() {
-        use lettre::AsyncStd1Transport;
+        use lettre::AsyncTransport;
 
         let sender_ok = StubTransport::new_ok();
         let sender_ko = StubTransport::new_error();
@@ -46,7 +47,7 @@ mod test {
     #[cfg(feature = "tokio02")]
     #[tokio::test]
     async fn stub_transport_tokio02() {
-        use lettre::Tokio02Transport;
+        use lettre::AsyncTransport;
 
         let sender_ok = StubTransport::new_ok();
         let sender_ko = StubTransport::new_error();