Add loading attribute to image partial (#547)

Author: jarrodmillman

layouts/partials/_elements/image.html

@@ -3,5 +3,6 @@
   {{- with .data.align }} class="align-{{ . }}"{{ end -}}
   {{- with .data.width }} width="{{ . }}"{{ end -}}
   {{- with .data.height }} height="{{ . }}"{{ end -}}
+  {{- with .data.loading }} loading="{{ . }}"{{ end -}}
 >
 {{- if .data.target }}</a>{{ end -}}

layouts/shortcodes/image.html

@@ -25,6 +25,7 @@
 align = 'right'
 height = 200
 width = 200
+loading = 'lazy'
 {{< /image >}}
 
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