EpubSettings
constructor(pageWidth: Double = 400.0, pageHeight: Double = 640.0, fontSize: Double = 12.0, margin: Double = 36.0, fontFamily: ReaderFontFamily? = null, lineHeightScale: Double = 1.0, textColor: RgbColor? = null, backgroundColor: RgbColor? = null, justify: Boolean? = null, usePublisherCss: Boolean = true)