feat(email): Upgrade mime crate to 0.3

lettre_email/Cargo.toml

@@ -16,7 +16,7 @@ travis-ci = { repository = "lettre/lettre_email" }
 
 [dependencies]
 email = "^0.0"
-mime = "^0.2"
+mime = "^0.3"
 time = "^0.1"
 uuid = { version = ">=0.4, <0.6", features = ["v4"] }
 lettre = { path = "../lettre" }

lettre_email/src/email.rs

@@ -3,6 +3,7 @@
 use email_format::{Address, Header, Mailbox, MimeMessage, MimeMultipartType};
 use error::Error;
 use lettre::SendableEmail;
+use mime;
 use mime::Mime;
 use std::fmt;
 use std::fmt::{Display, Formatter};
@@ -554,7 +555,7 @@ impl EmailBuilder {
     pub fn set_text<S: Into<String>>(&mut self, body: S) {
         self.message.set_body(body);
         self.message
-            .add_header(("Content-Type", format!("{}", mime!(Text/Plain; Charset=Utf8)).as_ref()));
+            .add_header(("Content-Type", format!("{}", mime::TEXT_PLAIN_UTF_8).as_ref()));
     }
 
     /// Sets the email body to HTML content
@@ -567,7 +568,7 @@ impl EmailBuilder {
     pub fn set_html<S: Into<String>>(&mut self, body: S) {
         self.message.set_body(body);
         self.message
-            .add_header(("Content-Type", format!("{}", mime!(Text/Html; Charset=Utf8)).as_ref()));
+            .add_header(("Content-Type", format!("{}", mime::TEXT_HTML).as_ref()));
     }
 
     /// Sets the email content
@@ -588,12 +589,12 @@ impl EmailBuilder {
 
         let text = PartBuilder::new()
             .body(body_text)
-            .header(("Content-Type", format!("{}", mime!(Text/Plain; Charset=Utf8)).as_ref()))
+            .header(("Content-Type", format!("{}", mime::TEXT_PLAIN_UTF_8).as_ref()))
             .build();
 
         let html = PartBuilder::new()
             .body(body_html)
-            .header(("Content-Type", format!("{}", mime!(Text/Html; Charset=Utf8)).as_ref()))
+            .header(("Content-Type", format!("{}", mime::TEXT_HTML).as_ref()))
             .build();
 
         alternate.add_child(text);

lettre_email/src/lib.rs

@@ -54,7 +54,6 @@
 
 #![deny(missing_docs, unsafe_code, unstable_features, warnings, missing_debug_implementations)]
 
-#[macro_use]
 extern crate mime;
 extern crate time;
 extern crate uuid;