pic.rb in jekyll-assets-3.0.4

- old
+ new

@@ -7,17 +7,10 @@
 
 module Jekyll
   module Assets
     class HTML
       class Pic < HTML
-        content_types "image/webp"
-        content_types "image/jpeg"
-        content_types "image/tiff"
-        content_types "image/svg+xml"
-        content_types "image/bmp"
-        content_types "image/gif"
-        content_types "image/png"
-        content_types "image/jpg"
+        content_types %r!^image/(?\!x-icon$)[a-zA-Z0-9\-_]+$!
 
         # --
         # @todo this should be reworked so we don't need to use
         #   tag to loop back in on ourselves.
         # --