Imports
- github.com/mdigger/goldmark-attributes
- github.com/mdigger/goldmark-text-replacer
- github.com/richardwilkes/toolbox/errs
- github.com/richardwilkes/toolbox/txt
- github.com/richardwilkes/toolbox/xio
- github.com/yuin/goldmark
- github.com/yuin/goldmark/extension
- github.com/yuin/goldmark/parser
- github.com/yuin/goldmark/renderer/html