Imports
- github.com/beevik/etree
- github.com/kr/smartypants
- github.com/pgaskin/kepubify/_/html/golang.org/x/net/html
- github.com/pgaskin/kepubify/_/html/golang.org/x/net/html/atom
- github.com/pgaskin/kepubify/_/html/golang.org/x/net/html/charset
- golang.org/x/sync/errgroup
- golang.org/x/text/transform