# ChangeLogAll notable changes are documented in this file using the [Keep a CHANGELOG](http://keepachangelog.com/) principles.## [2.1.1] - 2019-02-20### Changed* Improved formatting of memory consumption for `resourceUsage()`## [2.1.0] - 2019-02-20### Changed* Improved formatting of memory consumption for `resourceUsage()`## [2.0.0] - 2018-02-01### Changed* This component now uses namespaces### Removed* This component is no longer supported on PHP 5.3, PHP 5.4, PHP 5.5, PHP 5.6, and PHP 7.0[2.1.1]:https://github.com/sebastianbergmann/diff/compare/2.1.0...2.1.1[2.1.0]:https://github.com/sebastianbergmann/diff/compare/2.0.0...2.1.0[2.0.0]:https://github.com/sebastianbergmann/diff/compare/1.0.9...2.0.0
