docs(changelog): add changelog file

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/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+
+## [4.6.0] - 2023-12-06
+add some ways for keyboard navigation
+
+
+## [4.5.0] - 2022-07-12
+- Remove tabs permission
+- stop using amo link as add-on homepage
+
+## [4.2.1] - 2019-03-02
+minor adjust style at empty state
+
+## [4.2.0] - 2019-03-02
+- try to fix 'invalid date' problem#67
+- i18n for Deutsch (thanks to Bernd Schandl) #84
+- allow user access full list page, option page even there is no cache #83
+- chrome version #85
+
+## [4.1.1] - 2019-01-27
+* allow user set time for autoclear
+* fix database bug
+
+## [4.0.1] - 2018-12-01
+* redesign lite UI and use it for browserAction, you could click the list icon on top right to access full list.
+* make interval to save configure
+
+## [3.20.0] - 2018-06-10
+Change the 'show' btn in list page to 'copy' btn, so that user could copy text by one single click.
+
+## [3.19.5] - 2018-03-31
+
+
+## [3.19.4] - 2018-03-31
+
+
+## [3.19.3] - 2018-03-31
+
+
+## [3.19.2] - 2018-03-31
+
+
+## [3.19.1] - 2018-03-31
+
+
+## [3.17.0] - 2018-01-20
+correct I18n for zh_CN
+
+## [3.16.0] - 2018-01-20
+Allow users to disabling context menu feature
+
+## [3.15.0] - 2018-01-13
+extract database manipulate method
+
+## [3.14.0] - 2018-01-13
+* Try to make 'Invalid Date' valid.
+* fix the 'I can't delete cache' problem.
+
+## [3.13.0] - 2017-12-31
+https://github.com/wildskyf/TextareaCache/milestone/11
+
+## [3.12.0] - 2017-12-23
+
+
+## [3.10.0] - 2017-12-20
+
+
+## [3.9.1] - 2017-12-20
+
+
+## [3.9.0] - 2017-12-19
+
+
+## [3.8.1] - 2017-12-07
+
+
+## [3.7.0] - 2017-12-07
+
+
+## [3.6.0] - 2017-12-07
+
+
+## [3.5.0] - 2017-12-03