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/System.Device.Pwm/tree/HEAD)
+
+[Full Changelog](https://github.com/nanoframework/System.Device.Pwm/compare/v1.0.0-preview.10...HEAD)
+
+**Implemented enhancements:**
+
+- Adding static constructor from pin [\#1](https://github.com/nanoframework/System.Device.Pwm/pull/1)
+
+## [v1.0.0-preview.10](https://github.com/nanoframework/System.Device.Pwm/tree/v1.0.0-preview.10) (2021-09-20)
+
+[Full Changelog](https://github.com/nanoframework/System.Device.Pwm/compare/8941118c7b1b337ff4163e2293b327fb01320730...v1.0.0-preview.10)
+
 
 
 \* *This Changelog was automatically generated by [github_changelog_generator](https://github.com/github-changelog-generator/github-changelog-generator)*