# Changes in http-parser 2.x.x

## [2.0.0]
* Migrated to PHP 7.0, strong typing on functions returns and parameters.

## [2.1.0]
* Refactoring to use a collection instead an array of fields
* Separate HttpParser on HttpRequestParser and HttpResponseParser to accomplish in a better way the Single Responsability Principle.

## [2.2.0]
* Upgrade phpunit to version 6
* minor improvements for php 7.1
* header annotations are normalized

## [2.2.1]
* fix to upgrade php version to 7.1

## [2.2.2]
* improve headers information