now also supporting subtitle and icon on title slide

src/Parser.js

@@ -36,6 +36,11 @@ const tokenize = string => {
 const injectTitle = (deck, meta) => {
 	const title = [];
 
+	if (meta?.icon)
+		title.push({
+			type   : "image",
+			href   : meta.icon
+		});
 	if (meta?.title)
 		title.push({
 			type   : "heading",
@@ -47,6 +52,17 @@ const injectTitle = (deck, meta) => {
 				}
 			]
 		});
+	if (meta?.subtitle)
+		title.push({
+			type   : "heading",
+			level  : 2,
+			tokens : [
+				{
+					type : "text",
+					text : meta.subtitle
+				}
+			]
+		});
 	if (meta?.author)
 		title.push({
 			type   : "paragraph",