updated CHANGELOG.md

CHANGELOG

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-v1.0.6:
-1. fixed energy category names and units issue in EnergyItem reports.
-
-

CHANGELOG.md

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+# Changelog
+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/).
+
+## [Unreleased]
+### Added
+- None.
+
+### Changed
+- None.
+
+### Fixed
+- fixed energy category names and units issue in EnergyItem reports.
+
+### Removed
+- None.
+
+## [v1.0.5] - 2021-02-23
+### Added
+- None.
+
+### Changed
+- None.
+
+### Fixed
+- None.
+
+### Removed
+- None.
+
+[Unreleased]: https://github.com/MyEMS/myems/compare/v1.0.5...HEAD
+[v1.0.5]: https://github.com/MyEMS/myems/releases/tag/v1.0.5