Update CHANGELOG

CHANGELOG.md

@@ -1,3 +1,22 @@
+5.4.0 (08/25/2017)
+------------------
+
+* Added tooling for Adobe AIR (`lime test air`, `lime test windows -air`, etc)
+* Added externs for Adobe AIR classes and types
+* Added `<haxelib repository="" />` for choosing a custom haxelib repository path
+* Added OpenGL ES 3 API support (currently enabled on Linux and Emscripten)
+* Added support for setting `HAXELIB_PATH` environment variable in projects
+* Changed the output directory to not include the build type by default
+* Improved HTML5 to default images to canvas, not a typed array
+* Improved HXP to handle `-nocolor`, `-verbose` and other compile flags
+* Improved HXP to be able to update environment variables for build process
+* Fixed tvOS target to use `<config:tvos provisioning-profile="" />`
+* Fixed Android builds when using an Android SDK older than API 23
+* Fixed an issue when running command-line tools from a root directory
+* Fixed UTF-8 `charCodeAt` when index is out of range
+* Fixed the `strength` property of `ImageDataUtils.gaussianBlur`
+
+
 5.3.0 (07/31/2017)
 ------------------