Update changelog

CHANGELOG.md

@@ -1,13 +1,18 @@
-## 3.0
+## 3.1.0
+* Switch code coverage ignore rule from Istanbul to V8 syntax (as we have switched)
+* Fix running (Prettier) on Windows, as line-endings may be different (caused by git)
+* Update dependencies, a Prettier change to nested ternaries is likely to cause errors
+
+## 3.0.0
 * Switch to new Eslint "flat" config format
 * Only expose one rule-set
 * Based on XO (like v1) but including some rules from v2 (like `eslint-plugin-jsx-a11y` and `confusing-browser-globals`) and rules from other repos
 * Includes Prettier for formatting
 * Enforces alphabetical sorting of most things, using `eslint-plugin-perfectionist`
 
-## 2.0
+## 2.0.0
 * Rewrite based on AirBnB config
 (Was never published to NPM, only used from GitHub)
 
-## 1.x
+## 1.x.x
 * Initial shared Eslint configs