Fix several issues with the Atom feeds

- Make sure Author info populates correctly
- Sort posts by Date
- Remove un-dated posts from the feed
- Remove Draft posts from the feed if the site isn't in Development mode

layouts/partials/feeds/atom/base.xml

@@ -4,23 +4,26 @@
 {{ printf "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>" | safeHTML }}
 <feed xmlns="http://www.w3.org/2005/Atom">
   <title>{{ $context.Site.Title }}</title>
-  <link href="{{ $context.Permalink }}" />
-  <link href="{{ `/feed.atom` | absURL }}" rel="self" />
+  {{ with $context.OutputFormats.Get "Atom" -}}
+    <link rel="self" type="application/atom+xml" href="{{ .Permalink }}" />
+  {{- end }}
   <link href="{{ `/icons/favicon.png` | absURL }}" rel="shortcut icon" />
-  {{ with $context.Date }}
+  {{ with $context.Date -}}
     <updated>{{ . | time.Format "2006-01-02T15:04:05-07:00" | safeHTML }}</updated>
-  {{ end }}
+  {{- end -}}
   <id>{{ $context.Permalink }}</id>
-  {{ with $context.Site.Author }}
+  {{ with $context.Site.Params.Author -}}
     <author>
       {{ with .name }}<name>{{ . }}</name>{{ end }}
       {{ with .email }}<email>{{ . }}</email>{{ end }}
       <uri>{{ $context.Site.Home.Permalink }}</uri>
     </author>
-  {{ end }}
+  {{- end }}
   <generator version="{{ hugo.Version }}" uri="https://gohugo.io">Hugo {{ hugo.Version }}</generator>
   <rights>© 2020-{{ now.Year }} Eryn Wells</rights>
-  {{ range $pages }}
-    {{ .Render "atom_entry" }}
-  {{ end }}
+  {{ range $pages -}}
+    {{- if and (not .Date.IsZero) (or hugo.IsDevelopment (not .Draft)) -}}
+      {{ .Render "atom_entry" }}
+    {{- end -}}
+  {{- end -}}
 </feed>