refactor: rename DTree to DValue

site/info/components/code_example.uce

@@ -107,7 +107,7 @@ bool cpp_type(String word)
 {
 	return(
 		word == "String" ||
-		word == "DTree" ||
+		word == "DValue" ||
 		word == "Request" ||
 		word == "StringList" ||
 		word == "StringMap" ||

site/info/config/settings.uce

@@ -1,6 +1,6 @@
-DTree get_config()
+DValue get_config()
 {
-	DTree config;
+	DValue config;
 
 	config["site"]["name"] = "UCE Starter";
 	config["site"]["default_page_title"] = "Home";

site/info/index.uce

@@ -31,7 +31,7 @@ void render_link_card(String href, String title, String body, String meta)
 
 void render_code_example(Request& context, String eyebrow, String title, String summary, String code, String note, String language = "uce")
 {
-	DTree props;
+	DValue props;
 	props["eyebrow"] = eyebrow;
 	props["title"] = title;
 	props["summary"] = summary;
@@ -84,7 +84,7 @@ RENDER(Request& context)
 		"}\n\n"
 		"RENDER(Request& context)\n"
 		"{\n"
-		"\tDTree props;\n"
+		"\tDValue props;\n"
 		"\tprops[\"title\"] = \"Shipping note\";\n"
 		"\tprops[\"body\"] = \"Components are just .uce files with structured props.\";\n"
 		"\t<>\n"
@@ -115,7 +115,7 @@ RENDER(Request& context)
 		"}\n\n"
 		"WS(Request& context)\n"
 		"{\n"
-		"\tDTree payload = json_decode(context.in);\n"
+		"\tDValue payload = json_decode(context.in);\n"
 		"\tString connection_id = context.params[\"WS_CONNECTION_ID\"];\n"
 		"\tcontext.connection[\"name\"] = payload[\"name\"];\n"
 		"\tpayload[\"connection_id\"] = connection_id;\n"