Add @deprecated tag to lua docs

docs/templates/ldoc.ltp

@@ -14,7 +14,55 @@ function ldoc.url(path)
 end
 
 function ldoc.realm_icon(realm)
-	return "<span class=\"realm " .. (realm or "") .. "\"></span>";
+	return "<span class=\"realm " .. (realm or "") .. "\"></span>"
+end
+
+function ldoc.sidebar_item(item, module)
+	local text = ""
+
+	local deprecated = item.tags.deprecated
+	if deprecated then
+		text = text .. "<span class=\"strikethrough\">"
+	else
+		text = text .. "<span>"
+	end
+
+	text = text .. ldoc.realm_icon(item.tags.realm[1])
+	text = text .. "<a href=\""
+		.. ldoc.ref_to_module(module) .. "#" .. item.name
+		.. "\">"
+
+	if ldoc.is_kind_classmethod(module.kind) then
+		text = text .. item.name:gsub(".+:", "")
+	else
+		text = text .. item.name:gsub(module.name .. ".", "")
+	end
+
+	text = text
+		.. "</a>"
+		.. "</span>"
+	return text
+end
+
+function ldoc.item_header(item)
+	local text = ""
+
+	text = text .. "<a class=\"anchor\">"
+
+	local deprecated = item.tags.deprecated
+	if deprecated then
+		text = text .. "<h1 class=\"strikethrough\">"
+	else
+		text = text .. "<h1>"
+	end
+
+	text = text
+		.. ldoc.realm_icon(item.tags.realm[1])
+		.. ldoc.display_name(item)
+		.. "</h1>"
+		.. "</a>"
+
+	return text
 end
 
 function ldoc.is_kind_classmethod(kind)