Add changelog for #7967

CHANGELOG.txt

@@ -9,6 +9,7 @@ Changelog
  * Change comment headers’ date formatting to use browser APIs instead of requiring a library (LB (Ben Johnston))
  * Lint with flake8-comprehensions and flake8-assertive (Mads Jensen)
  * Switch the Wagtail branding font to a system font stack (Steven Steinwand)
+ * Add black configuration and reformat code using it (Dan Braghis)
 
 
 2.16.1 (11.02.2022)

docs/releases/2.17.md

@@ -20,6 +20,7 @@ Here are other changes related to the redesign:
  * Major updates to frontend tooling; move Node tooling from Gulp to Webpack, upgrade to Node v16 and npm v8, eslint v8, stylelint v14 and others (Thibaud Colas)
  * Change comment headers’ date formatting to use browser APIs instead of requiring a library (LB (Ben Johnston))
  * Lint with flake8-comprehensions and flake8-assertive (Mads Jensen)
+ * Add black configuration and reformat code using it (Dan Braghis)
 
 
 ### Bug fixes