Update CHANGELOG.md

Author: dwhinham

CHANGELOG.md

@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.3.1] - 2020-08-08
+
+### Added
+
+- Missing sample `[lcd]` config section from `mt32-pi.cfg`.
+
 ### Fixed
 
 - Incorrect `-dirty` suffix on version string on clean builds.
@@ -39,7 +45,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial version.
 
-[unreleased]: https://github.com/dwhinham/mt32-pi/compare/v0.3.0...HEAD
+[unreleased]: https://github.com/dwhinham/mt32-pi/compare/v0.3.1...HEAD
+[0.3.1]: https://github.com/dwhinham/mt32-pi/compare/v0.3.0..v0.3.1
 [0.3.0]: https://github.com/dwhinham/mt32-pi/compare/v0.2.1..v0.3.0
 [0.2.1]: https://github.com/dwhinham/mt32-pi/compare/v0.2.0..v0.2.1
 [0.2.0]: https://github.com/dwhinham/mt32-pi/compare/v0.1.0..v0.2.0