docs(CHANGES): Note ruff automated fixes

Author: tony

CHANGES

@@ -15,6 +15,25 @@ $ pip install --user --upgrade --pre libtmux
 
 <!-- To maintainers and contributors: Please add notes for the forthcoming version above -->
 
+### Development
+
+- Aggressive automated lint fixes via `ruff` (#539)
+
+  via ruff v0.3.4, all automated lint fixes, including unsafe and previews were applied:
+
+  ```sh
+  ruff check --select ALL . --fix --unsafe-fixes --preview --show-fixes; ruff format .
+  ```
+
+  Branches were treated with:
+
+  ```sh
+  git rebase \
+      --strategy-option=theirs \
+      --exec 'poetry run ruff check --select ALL . --fix --unsafe-fixes --preview --show-fixes; poetry run ruff format .; git add src tests; git commit --amend --no-edit' \
+      origin/master
+  ```
+
 ## libtmux 0.35.1 (2024-03-23)
 
 ### Bug fix