Update CHANGELOG for v1.0.0

***NO_CI***

Author: nfbot

CHANGELOG.md

@@ -2,7 +2,15 @@
 
 ## [**Changes available only in 'Preview' NuGet packages:**](https://github.com/nanoframework/System.Device.Adc/tree/HEAD)
 
-[Full Changelog](https://github.com/nanoframework/System.Device.Adc/compare/v1.0.0-preview.6...HEAD)
+[Full Changelog](https://github.com/nanoframework/System.Device.Adc/compare/v1.0.0-preview.8...HEAD)
+
+**Documentation and other chores:**
+
+- Bumps nanoFramework.CoreLibrary from 1.10.5 to 1.11.6-preview.2 [\#3](https://github.com/nanoframework/System.Device.Adc/pull/3)
+
+## [v1.0.0-preview.8](https://github.com/nanoframework/System.Device.Adc/tree/v1.0.0-preview.8) (2021-10-29)
+
+[Full Changelog](https://github.com/nanoframework/System.Device.Adc/compare/v1.0.0-preview.6...v1.0.0-preview.8)
 
 **Implemented enhancements:**