Update Changelog

Author: narangmayank

CHANGELOG.md

@@ -4,6 +4,19 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.0.2] - 2022-05-17
+
+### Added
+- Device Heartbeat
+- OTA Action Failure Message
+- Issue and Pull Request Template
+- Changelog
+
+### Fixed
+- Improve Example's Documentation
+- Custom Action Failure Message and Action Progress State
+- Handle Unregistered and Retried Actions
+
 ## [1.0.1] - 2022-03-22
 
 ### Added