feat: if seo image is specified - it can be different from image on page, otherwise page image is used for seo:image tags in HEAD section

lib/jekyll-seo-tag/image_drop.rb

@@ -55,7 +55,7 @@ module Jekyll
 
       def raw_path
         @raw_path ||= begin
-          image_hash["path"] || image_hash["facebook"] || image_hash["twitter"]
+          image_hash["twitter"] || image_hash["facebook"] || image_hash["path"]
         end
       end
 

lib/jekyll-seo-tag/version.rb

@@ -5,6 +5,6 @@ module Liquid; class Tag; end; end
 
 module Jekyll
   class SeoTag < Liquid::Tag
-    VERSION = "2.8.0"
+    VERSION = "2.8.1"
   end
 end