Updated changelog, added hints for local testing

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Changelog
 
+## TBD
+
+### Enhancements
+
+* Limit resource usage while sending events asynchronously \
+  Added MainContext configuration option for providing context from main app
+  [#231](https://github.com/bugsnag/bugsnag-go/pull/231)
+
 ## 2.4.0 (2024-04-15)
 
 ### Enhancements

LOCAL_TESTING.md

@@ -0,0 +1,29 @@
+
+## Unit tests
+* Install old golang version (do not install just 1.11 - it's not compatible with running newer modules): 
+
+```
+ASDF_GOLANG_OVERWRITE_ARCH=amd64 asdf install golang 1.11.13
+```
+
+* If you see error below use `CGO_ENABLED=0`.
+
+```
+# crypto/x509
+malformed DWARF TagVariable entry
+```
+
+## Local testing with maze runner
+
+* Maze runner tests require
+  * Specyfing `GO_VERSION` env variable to set a golang version for docker container.
+  * Ruby 2.7.
+  * Running docker.
+
+* Commands to run tests
+
+```
+	bundle install
+	bundle exec bugsnag-maze-runner
+  bundle exec bugsnag-maze-runner -c features/<chosen_feature>
+```