category_unicode_crosswalk
                        Emoji category to unicode crosswalk
emoji_categorize        Categorise each row by the emoji categories it
                        contains
emoji_extract_nest      Add a list-column of the emoji found in each
                        row
emoji_extract_unnest    Emoji counts per row, in long (tidy) form
emoji_filter            Keep only the rows whose text contains emoji
emoji_frequency         Frequency of every emoji in a text column
emoji_sentiment         Score the sentiment of the emoji in each row
emoji_sentiment_lexicon
                        Emoji Sentiment Ranking lexicon
emoji_summary           Summarise emoji presence in a text column
emoji_tokens            Tidy emoji tokens, one row per occurrence with
                        metadata
emoji_unicode_crosswalk
                        Emoji name, unicode and category crosswalk
top_n_emojis            The most frequent emoji in a text column
