Ermoji Versions Save

• Added a new Pick and Insert Emoji addin (#1)

Infinite emoji scroll

• Replaced emoji pagination with infinite scroll
• Better filtering presets and search input location
• Enlarged emoji

• Added "dropup" menu for unicode. You can now copy the unicode or HTML values for the selected emoji.
• Some behind-the-scenes refactoring that removes purrr dependency and streamlines the app/gadget functions.