Add author meta tag (by @ttybitnik)

layouts/partials/seo_tags.html

@@ -1,6 +1,7 @@
 <!-- Primary Meta Tags -->
 <meta name="title" content="{{ with .Title }}{{ . }}{{ else }}{{ .Site.Title }}{{ end }}" />
 <meta name="description" content="{{ with .Description }}{{ . }}{{ else }}{{if .IsPage}}{{ .Summary }}{{ else }}{{ with .Site.Params.description }}{{ . }}{{ end }}{{ end }}{{ end }}" />
+<meta name="author" content="{{ with .Params.author }}{{ . }}{{ end }}" />
 <meta name="keywords" content="{{ if .IsPage}}{{ range $index, $tag := .Params.tags }}{{ $tag }},{{ end }}{{ else }}{{ range $plural, $terms := .Site.Taxonomies }}{{ range $term, $val := $terms }}{{ printf "%s," $term }}{{ end }}{{ end }}{{ end }}" />
 
 <!-- Only generate social card if: -->