Update CHANGELOG for v1.0.3

***NO_CI***

Author: nfbot

CHANGELOG.md

@@ -1,3 +1,14 @@
 # Changelog
 
+## [Unreleased](https://github.com/nanoframework/System.Device.I2s/tree/HEAD)
+
+[Full Changelog](https://github.com/nanoframework/System.Device.I2s/compare/1b79c9dbcd1af9210ecaf8d8106eb743c8634bf3...HEAD)
+
+**Implemented enhancements:**
+
+- Completed implementation [\#3](https://github.com/nanoframework/System.Device.I2s/pull/3)
+- Create I2S Configuration Class [\#1](https://github.com/nanoframework/System.Device.I2s/pull/1)
+
+
+
 \* *This Changelog was automatically generated by [github_changelog_generator](https://github.com/github-changelog-generator/github-changelog-generator)*