code: public static StreamEx<String> split(CharSequence str, char delimiter) {
          return split(str, delimiter, true);
      }
docs: Creates a stream from the given input sequence around matches of the
  given character.
  
  <p>
  This method is equivalent to {@code StreamEx.split(str, delimiter, true)}.
  
  @param str The character sequence to be split
  @param delimiter The delimiter character to use for splitting
  
  @return The stream of strings computed by splitting the input around the
  delimiters
  @see Pattern#splitAsStream(CharSequence)
  @since 0.5.1