Export frequently util

src/index.js

@@ -1,5 +1,6 @@
 import emojiIndex from './utils/emoji-index'
 import store from './utils/store'
+import frequently from './utils/frequently'
 
 export { Picker, Emoji } from './components'
-export { emojiIndex, store }
+export { emojiIndex, store, frequently }