Header parsing

src/main.odin

@@ -25,8 +25,8 @@ print_token :: proc(token: Token, depth: int = 0) {
 		type_str = "Bold"
 	case TokenType.BreakLine:
 		type_str = "BreakLine"
-	case TokenType.Heading:
-		type_str = "Heading"
+	case TokenType.Header:
+		type_str = "Header"
 	case TokenType.Paragraph:
 		type_str = "Paragraph"
 	}