* chore: don't use cache when building release package
* feat: refactor icon widget design
* feat: sync the emoji between page and view
* feat: use cache to store the emoji data to prevent reloading
* feat: customize the emoji item builder
* feat: add i18n and shuffle emoji button
* fix: integration test
* feat: replace emoji picker in Grid and slash menu
* feat: support adding icon on mobile platform
* feat: support adding and removing icon on mobile
* test: add integration tests
* chore: change initial cover type's name to none
* chore: refactor cover node widget
* chore: use a constant instead of magic value
* fix: make the size of icon hover effect smaller
* chore: improve appearance of selected color
* test: add cover integration tests
* fix: inner ring of selected color in dark mode
* refactor: cover node to document header node
* test: simplify tests
* chore: rename files
