add code copy button

config.toml

@@ -52,6 +52,8 @@ enableEmoji = true  # Shorthand emojis in content files - https://gohugo.io/func
 
   relatedPosts = false  # Add a related content section to all single posts page
 
+  code_copy_button = true
+
   # Add custom css
   # customCSS = ["css/foo.css", "css/bar.css"]
 

themes/hermit

@@ -1 +1 @@
-Subproject commit 00dbd49a94f092b591bf7326c9005a97117836d9
+Subproject commit 16c9d78ae518aebb65c3bca5871b2550bbabca16