chore: Update

CHANGELOG.md

@@ -9,15 +9,28 @@ and adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0).
 
 ### Changed
 
-- **BREAKING:** Moved passing response body to instrumentation functions behind
-  feature flag / whitelist that is empty by default. This changes a feature
-  introduced with `5.10.0` and affects users that have custom instrumentation
-  functions accessing `info.response.body`.
-
-  Opt-in via new parameter `body_handlers` added to instrumentator and
-  middleware constructors. Parameter expects list of pattern strings to match
-  handlers. To keep the old behavior, pass the argument `[r".*"]` to match all
-  handlers.
+- **BREAKING:** Disabled passing response body to instrumentation functions.
+  Moved behind whitelist that is empty by default. Changes a feature introduced
+  with [5.10.0](#5100--2023-02-26). Only affects users that have custom
+  instrumentations that access `info.response.body`.
+
+  Opt-in via new parameter `body_handlers` added to instrumentator constructor.
+  Parameter takes list of pattern strings to match handlers. For old behavior,
+  pass argument `[r".*"]` to match all handlers:
+
+  ```python
+  instrumentator = Instrumentator(body_handlers=[r".*"])
+  ```
+
+  Motivation for change: Collecting body negatively impacts performance of
+  responses with largish body.
+
+  Thanks to [@bbeattie-phxlabs](@bbeattie-phxlabs) for raising this issue in
+  [#234](https://github.com/trallnag/prometheus-fastapi-instrumentator/issues/234)
+  and implementing it in
+  [#233](https://github.com/trallnag/prometheus-fastapi-instrumentator/pull/233)
+  /
+  [#238](https://github.com/trallnag/prometheus-fastapi-instrumentator/pull/238).
 
 ## [5.11.2](https://github.com/trallnag/prometheus-fastapi-instrumentator/compare/v5.11.1...v5.11.2) / 2023-03-19