Convert .epub documents to eye friendly PDF

header.tex

\usepackage[Latin,Mathematics,NumberForms,Punctuation,Symbols]{ucharclasses}

\usepackage{fontspec}
\setmainfont[Ligatures=TeX]{Georgia}
\setsansfont[Ligatures=TeX]{Georgia}

\newfontfamily{\mydefaultfont}{Symbola}
\newfontfamily{\mymainfont}{Georgia}

\setTransitionsForSymbols{\mydefaultfont}{\mymainfont}
\setTransitionsFor{NumberForms}{\mydefaultfont}{\mymainfont}
\setTransitionsForMathematics{\mydefaultfont}{\mymainfont}
\setTransitionTo{Punctuation}{\mymainfont}
\setTransitionTo{Latin}{\mymainfont}

script.sh

#!/bin/bash

pandoc -s -t latex \
       --toc \
       --top-level-division=chapter \
       --top-level-division=chapter \
       -V geometry:margin=1in \
       -V fontsize:16pt \
       -V documentclass:scrbook \
       -V classoption:oneside \
       --include-in-header=header.tex \
       --pdf-engine=xelatex \
       "$1" \
       -o "${1%.*}.pdf"