Copy change log updates from release/v1.28.x-0.49bx

Author: opentelemetrybot

CHANGELOG.md

@@ -1682,3 +1682,29 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#3778](https://github.com/open-telemetry/opentelemetry-python/pull/3778))
 - Fix license field in pyproject.toml files
   ([#3803](https://github.com/open-telemetry/opentelemetry-python/pull/3803))
+
+- Removed superfluous py.typed markers and added them where they were missing
+  ([#4172](https://github.com/open-telemetry/opentelemetry-python/pull/4172))
+- Include metric info in encoding exceptions
+  ([#4154](https://github.com/open-telemetry/opentelemetry-python/pull/4154))
+- sdk: Add support for log formatting
+  ([#4137](https://github.com/open-telemetry/opentelemetry-python/pull/4166))
+- sdk: Add Host resource detector
+  ([#4182](https://github.com/open-telemetry/opentelemetry-python/pull/4182))
+- sdk: Implementation of exemplars
+  ([#4094](https://github.com/open-telemetry/opentelemetry-python/pull/4094))
+- Implement events sdk
+  ([#4176](https://github.com/open-telemetry/opentelemetry-python/pull/4176))
+- Update semantic conventions to version 1.28.0
+  ([#4218](https://github.com/open-telemetry/opentelemetry-python/pull/4218))
+- Add support to protobuf 5+ and drop support to protobuf 3 and 4
+  ([#4206](https://github.com/open-telemetry/opentelemetry-python/pull/4206))
+- Update environment variable descriptions to match signal
+  ([#4222](https://github.com/open-telemetry/opentelemetry-python/pull/4222))
+- Record logger name as the instrumentation scope name
+  ([#4208](https://github.com/open-telemetry/opentelemetry-python/pull/4208))
+- Fix memory leak in exporter and reader
+  ([#4224](https://github.com/open-telemetry/opentelemetry-python/pull/4224))
+- Drop `OTEL_PYTHON_EXPERIMENTAL_DISABLE_PROMETHEUS_UNIT_NORMALIZATION` environment variable
+  ([#4217](https://github.com/open-telemetry/opentelemetry-python/pull/4217))
+