Resolve the date d from format YYYY-MM-DD Returns a pretty date and a machine date.

Given /path/to/filename.ext, return filename.

Return the href inDir/a/b/c/file.md -> a/b/c/file.

If link is "/a/b/c/file.md" crumbsTitle: {"a", "b", "c"} crumbsLink: {"a/index.html", "a/b/index.html", "a/b/c/index.html"}.

Return title mt else fn.