Merge branch 'emoji-selector-update' into 'develop'

CHANGELOG.md

docs/USER_GUIDE.md

docs/example_emoji.png

src/boot/after_store.js

src/components/emoji_input/emoji_input.js

src/components/emoji_input/emoji_input.vue

src/components/emoji_input/suggestor.js

src/components/emoji_picker/emoji_picker.js

src/components/emoji_picker/emoji_picker.scss

src/components/emoji_picker/emoji_picker.vue

src/components/media_upload/media_upload.vue

src/components/post_status_form/post_status_form.js

src/components/post_status_form/post_status_form.vue

src/components/settings/settings.js

src/components/settings/settings.vue

src/components/status/status.vue

src/components/sticker_picker/sticker_picker.js

src/components/sticker_picker/sticker_picker.vue

src/components/tab_switcher/tab_switcher.js

src/components/tab_switcher/tab_switcher.scss