Make GooglePubSubPublisher cloneable (#33)

* Make GooglePubSubPublisher cloneable

Sometimes it's useful to have more than one

* Add some debug derives

* Release v4.1.0

Author: rnarubin

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "hedwig"
 # TODO: When bumping to next major version, make sure to clean up the MRV and lints we allow in CI.
-version = "4.0.0"
+version = "4.1.0"
 authors = [
     "Aniruddha Maru <[email protected]>",
     "Simonas Kazlauskas <[email protected]>"

src/consume/mod.rs

@@ -96,6 +96,7 @@ pub trait DecodableMessage {
 /// service.
 ///
 /// See the documentation for acknowledging messages on [`Consumer`]
+#[derive(Debug)]
 #[must_use = "Messages should be ack'ed to prevent repeated delivery, or nack'ed to improve responsiveness"]
 pub struct AcknowledgeableMessage<A, M> {
     /// The acknowledgement token which executes the ack/nack/modify operations
@@ -175,6 +176,7 @@ pub trait AcknowledgeToken {
 
 /// The stream returned by the [`consume`](Consumer::consume) function
 #[pin_project]
+#[derive(Debug)]
 pub struct MessageStream<S, D, M> {
     #[pin]
     stream: S,

src/publish/publishers/googlepubsub.rs

@@ -189,6 +189,7 @@ impl GooglePubSubError {
 /// };
 /// ```
 #[allow(missing_debug_implementations)]
+#[derive(Clone)]
 #[cfg_attr(docsrs, doc(cfg(feature = "google")))]
 pub struct GooglePubSubPublisher<C> {
     identifier: Cow<'static, str>,