Feedback
1.) Custom emojis are stretched when they are not square-sized
CSS: .emoji-picker__custom-emoji { width: 1em; height: 1em; }
Fix: This should be fixed and only height set to 1em and width to auto (or use max-sizing)
2.) Default category doesn't contain "Custom" (would be great to choose)
3.) and most important
Live-Preview in the editor doesnt show the emoji, only the :emojicode