Add Changelog for v0.1.0 release

Author: juli27

CHANGELOG.md

@@ -0,0 +1,24 @@
+# Changelog
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [0.1.0] - 2019-07-01
+### Added
+- Windows x86 build support
+- Polling input
+
+#### Platform
+- Basic platform abstraction
+- Windows API support
+- Main window creation
+- Input events
+
+#### Gfx
+- Gfx backend (renderer) abstraction
+- Direct3D 9 fixed function backend
+
+#### Sandbox
+- Direct3D 9 tutorial 2 - 5
+- Navigate with the left and right arrow keys between the test cases
+
+[0.1.0]: https://github.com/juli27/basaltcpp/releases/tag/v0.1.0