Added changelog, bumped version number.

Author: Mx7f

API/src/version.t

@@ -1,5 +1,5 @@
 -- Semantic Version (http://semver.org/) of Opt
 opt_version_major = 0
-opt_version_minor = 1
+opt_version_minor = 2
 opt_version_patch = 0
 opt_version_string = "v"..tostring(opt_version_major).."."..tostring(opt_version_minor).."."..tostring(opt_version_patch)

CHANGELOG.md

@@ -0,0 +1,32 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [0.2.0] - 2017-10-22
+### Added
+- Changelog
+- Semantic version number
+- threadsPerBlock initialization parameter. Globally sets #threads/block
+- Auto-detection of native double-precision floating point atomics
+
+### Fixed 
+- Longstanding code emission bug on graph domains
+
+## [0.1.1] - 2017-07-05
+### Added
+- Simple tests/
+
+### Fixed 
+- Memory leaks
+
+## [0.1.0] - 2017-03-02
+### Added
+- All of Opt! This was the initial public release.
+
+[Unreleased]: https://github.com/niessner/Opt/compare/v0.2.0...HEAD
+[0.2.0]: https://github.com/niessner/Opt/compare/v0.1.1...v0.2.0
+[0.1.1]: https://github.com/niessner/Opt/v0.1.0...v0.1.1