Update CHANGELOG for v1.0.0

***NO_CI***

Author: nfbot

CHANGELOG.md

@@ -1,5 +1,17 @@
 # Changelog
 
+## [**Changes available only in 'Preview' NuGet packages:**](https://github.com/nanoframework/nanoFramework.M5Stack/tree/HEAD)
+
+[Full Changelog](https://github.com/nanoframework/nanoFramework.M5Stack/compare/v1.0.0-preview.56...HEAD)
+
+**Documentation and other chores:**
+
+- Update 2 nuget dependencies [\#23](https://github.com/nanoframework/nanoFramework.M5Stack/pull/23)
+
+## [v1.0.0-preview.56](https://github.com/nanoframework/nanoFramework.M5Stack/tree/v1.0.0-preview.56) (2021-06-01)
+
+[Full Changelog](https://github.com/nanoframework/nanoFramework.M5Stack/compare/v1.0.0-preview.54...v1.0.0-preview.56)
+
 ## [v1.0.0-preview.54](https://github.com/nanoframework/nanoFramework.M5Stack/tree/v1.0.0-preview.54) (2021-06-01)
 
 [Full Changelog](https://github.com/nanoframework/nanoFramework.M5Stack/compare/v1.0.0-preview.53...v1.0.0-preview.54)