code: function sizeChange() {
        if (options.fixedSize) {
          adaptFontSize();
        } else {
          if (isUtimage) {
            adaptImageHeight();
          } else {
            adaptPostHeight();
          }
        }
  
        if (options.chars && mode && mode.editor === true) {
          updateCharactersCounter();
        }
      }
docs: /*
  Either the post, the font, or the ut-image object can adapt the height
  The font in the case we have a fixed element size
  The post when the size is free and as more as we type
  The ut-image when it's present, the image grow as we type