Add changelog

Author: AydinHassan

CHANGELOG.md

@@ -0,0 +1,40 @@
+# Change Log
+All notable changes to this project will be documented in this file.
+Updates should follow the [Keep a CHANGELOG](http://keepachangelog.com/) principles.
+
+## [Unreleased][unreleased]
+### Added
+
+### Changed
+
+### Fixed
+
+### Removed
+
+## [2.0.0]
+### Fixed
+ - PHPUnit deprecations - updated to createMock()
+   
+### Changed
+ - Require ext-posix (#50)
+ - Make MenuStyle easier to construct by only allowing changes to be made via setters (#45)
+ 
+### Added
+ - Added getStyle() to CliMenu to get access to the style object from the menu itself (#42)
+ - Added redraw method to CliMenu which can redraw the menu immediately with any style changes. See 
+   examples/crazy-redraw.php for an example (#43)
+ - Added tests for child menu style inheritance (#44)
+ - Add getter getItems() to get all items from the menu (#46)
+ - Add method removeItem(ItemInterface $item) to remove an item from the menu (#46)
+ - Ability to toggle item extra while the menu is open - see examples/toggle-item-extra.php (#46)
+ - Added dialogues flash and confirm - they both display some text on top of the menu, flash is dismissed with 
+   any key press where the confirm requires enter to be pressed on the provided button. 
+   See examples/confirm.php and examples/flash.php (#49)
+ 
+### Removed
+ - Removed windows terminal - many required terminal features are unavailable (#50)
+ - Individual component instantiation restrictions (#41)
+ 
+ ## [1.2.0] 
+ ### Added
+  - Added ability to disable menu items and sub-menus, they will appear dimmed and will be un-selectable (#40)