Add changelog and release 0.3.0

Author: Flakebi

CHANGELOG.md

@@ -0,0 +1,13 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+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).
+
+## [0.3.0] - 2020-05-31
+### ℹ Changed
+- Switched error handling library from `failure` to `thiserror`
+- Updated to Rust 2018 edition
+
+### 🐛 Fixed
+- Fixed possible corrupt header when compressing incompressible data with specific input lengths (found by libfuzz)

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "quicklz"
-version = "0.2.0"
+version = "0.3.0"
 authors = ["Flakebi <[email protected]>"]
 description = """
 QuickLZ is a fast compression algorithm.