Increment app version and update the changelog

CHANGELOG.md

@@ -1,5 +1,14 @@
 # History of notable changes introduced in each version
 
+## v1.2.0 (2022-03-08)
+#### New features
+  - Add previous and new theme name in the custom event ([`a34af81a`](https://github.com/mahozad/theme-switch/commit/a34af81a))
+#### Other
+  - Allow invalid strings as the value of theme key in storage ([`453bc60b`](https://github.com/mahozad/theme-switch/commit/453bc60b))
+  - Add some minor code improvements ([`6d8bc9c9`](https://github.com/mahozad/theme-switch/commit/6d8bc9c9), [`074b33fa`](https://github.com/mahozad/theme-switch/commit/074b33fa), [`8c3082b1`](https://github.com/mahozad/theme-switch/commit/8c3082b1), [`104c2ef2`](https://github.com/mahozad/theme-switch/commit/104c2ef2))
+
+[All commits since version 1.1.0](https://github.com/mahozad/theme-switch/compare/v1.1.0...v1.2.0)
+
 ## v1.1.0 (2022-03-07)
 #### New features
   - Add support for multiple instances of the element in a page ([`aa435053`](https://github.com/mahozad/theme-switch/commit/aa435053));

package.json

@@ -34,7 +34,7 @@
     "testURL": "http://localhost/"
   },
   "name": "@mahozad/theme-switch",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "description": "Animated toggle button to switch between light/dark/system theme.",
   "main": "theme-switch.js",
   "files": [