release: 2023-03-28 (twilight-rs#2183)

* release: 2023-03-26 updates

* fix

book/src/SUMMARY.md

@@ -18,4 +18,5 @@
 - [Bots Using Twilight](./chapter_3_bots_using_twilight.md)
 - [Versions](./versions/summary.md)
     - [Version 0.15](./versions/0.15/summary.md)
+      - [2023-03-28 Updates](./versions/0.15/2023-03-28.md)
       - [2023-02-26 Updates](./versions/0.15/2023-02-26.md)

book/src/versions/0.15/2023-03-28.md

@@ -0,0 +1,52 @@
+# 2023-03-28 Updates
+
+We've published minor versions of a number of crates. This release is composed
+of bugfixes, performance improvements, and documentation improvements.
+
+## Bugfixes
+
+The [gateway queue]'s [`DayLimiter`] now properly calculates when the session
+resets.
+
+The [`UpdateGuildSticker`] request now uses the specified audit log reason;
+prior, it was accidentally ignoring the reason.
+
+Discord's Clyde AI bot has a unique avatar hash. Unlike other hashes that are
+hex based, Clyde's avatar hash is simply "clyde". We now handle deserialization
+of Clyde's avatar in our [`ImageHash`] optimization.
+
+## Documentation Improvements
+
+The [`Event::IntegrationDelete`] and [`Event::IntegrationUpdate`] variants'
+documentation was inversed, and has now been corrected.
+
+[`Standby`] now has an example of how to timeout futures and streams.
+
+## Performance Improvements
+
+The gateway's [`CommandRatelimiter`] performance has been improved by over 98%,
+with common calls being reduced from around 4 microseconds to around 57
+nanoseconds. This is something that can be used by users, and is also used by
+shards when sending commands, making common operations just a bit more speedy.
+Impressive!
+
+Avatars, banners, icons, and other assets are received as hashes, which we have
+[`ImageHash`] for as a performance improvement in storage. Instead of storing
+hashes as heap-allocated strings, we store them as 16 bytes on the stack.
+The performance of the deserialization and parsing of hashes is now 38% faster.
+
+Caching users received in [`InteractionCreate`]  events is now a bit faster in
+some situations due to [keying into a HashMap][`HashMap::get`] to check for the
+existence of a user instead of [iterating over the HashMap][`HashMap::iter`].
+
+[`CommandRatelimiter`]: https://docs.rs/twilight-gateway/0.15.2/twilight_gateway/struct.CommandRatelimiter.html
+[`DayLimiter`]: https://docs.rs/twilight-gateway-queue/0.15.2/twilight_gateway_queue/struct.LocalQueue.html
+[`Event::IntegrationDelete`]: https://docs.rs/twilight-model/0.15.2/twilight_model/gateway/event/enum.Event.html#variant.IntegrationDelete
+[`Event::IntegrationUpdate`]: https://docs.rs/twilight-model/0.15.2/twilight_model/gateway/event/enum.Event.html#variant.IntegrationUpdate
+[`HashMap::get`]: https://doc.rust-lang.org/stable/std/collections/hash_map/struct.HashMap.html#method.get
+[`HashMap::iter`]: https://doc.rust-lang.org/stable/std/collections/hash_map/struct.HashMap.html#method.iter
+[`ImageHash`]: https://docs.rs/twilight-model/0.15.2/twilight_model/util/image_hash/struct.ImageHash.html
+[`InteractionCreate`]: https://docs.rs/twilight-model/0.15.2/twilight_model/gateway/payload/incoming/struct.InteractionCreate.html
+[`Standby`]: https://docs.rs/twilight-standby/0.15.2/twilight_standby/struct.Standby.html
+[`UpdateGuildSticker`]: https://docs.rs/twilight-http/0.15.2/twilight_http/request/guild/sticker/struct.UpdateGuildSticker.html
+[gateway queue]: https://docs.rs/twilight-gateway-queue/0.15.2/twilight_gateway_queue/index.html

book/src/versions/summary.md

@@ -1,4 +1,5 @@
 # Version History
 
 - [0.15 - 2023-02-05](./0.15/summary.md)
+  - [0.15.2 - 2023-03-28](./0.15/2023-03-28.md)
   - [0.15.1 - 2023-02-26](./0.15/2023-02-26.md)