Fingerprint custom CSS so CDN caches pick up changes

layouts/partials/head.html

@@ -0,0 +1,43 @@
+<meta name="renderer" content="webkit" />
+<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"/>
+
+<meta http-equiv="Cache-Control" content="no-transform" />
+<meta http-equiv="Cache-Control" content="no-siteapp" />
+
+<meta name="theme-color" content="#f8f5ec" />
+<meta name="msapplication-navbutton-color" content="#f8f5ec">
+<meta name="apple-mobile-web-app-capable" content="yes">
+<meta name="apple-mobile-web-app-status-bar-style" content="#f8f5ec">
+
+<!-- author & description & keywords  -->
+<meta name="author" content="{{ partial "author.html" . }}" />
+
+{{- if .Description -}}
+  <meta name="description" content="{{ .Description | safeHTML }}" />
+{{- else if .IsPage -}}
+  <meta name="description" content="{{ .Summary | plainify }}" />
+{{- else if .Site.Params.description -}}
+  <meta name="description" content="{{ .Site.Params.description | safeHTML }}" />
+{{- end -}}
+
+<!-- Permalink & RSSlink -->
+<link rel="canonical" href="{{ .Permalink }}" />
+{{- with .OutputFormats.Get "RSS" }}
+  <link href="{{ .Permalink }}" rel="alternate" type="application/rss+xml" title="{{ $.Site.Title }}" />
+  <link href="{{ .Permalink }}" rel="feed" type="application/rss+xml" title="{{ $.Site.Title }}" />
+{{- end -}}
+
+<!-- Favicon and Touch icons -->
+<link rel="icon" type="image/png" sizes="32x32" href="{{ "favicon-32x32.png" | relURL }}">
+<link rel="icon" type="image/png" sizes="16x16" href="{{ "favicon-16x16.png" | relURL }}">
+
+<!-- Styles -->
+{{ $style := resources.Get "sass/main.scss" | toCSS | minify | fingerprint }}
+<link href="{{ $style.Permalink }}" rel="stylesheet">
+
+<!-- custom css (fingerprinted so CDN caches are busted on change) -->
+{{ range .Site.Params.customCSS -}}
+{{ with resources.Get (printf "css/%s" .) | fingerprint -}}
+<link rel="stylesheet" href="{{ .RelPermalink }}">
+{{ end }}
+{{ end }}

layouts/partials/research/styles.html

@@ -1 +1 @@
-<link rel="stylesheet" href="{{ "css/research.css" | relURL }}">
+{{ with resources.Get "css/research.css" | fingerprint }}<link rel="stylesheet" href="{{ .RelPermalink }}">{{ end }}