Merge pull request #189 from salesforce/changelog-md

Create CHANGELOG.md

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+## 4.0.0
+
+### Breaking Changes (Major Version)
+
+- Modernized JS Syntax
+  - Use ESLint and Prettier to apply consistent, modern formatting (add dependency on `universalify`, `eslint` and `prettier`)
+- Upgraded version dependencies for `psl` and `async`
+- Re-order parameters for `findCookies()` - callback fn has to be last in order to comply with `universalify`
+- Use Classes instead of function prototypes to define classes
+    - Might break people using `.call()` to do inheritance using function prototypes
+
+### Minor Changes
+- SameSite cookie support
+- Cookie prefix support 
+- Support for promises
+- '.local' support 
+- Numerous bug fixes!
+
+
+