Fix class

parser/src/grammar.pest

@@ -38,7 +38,7 @@ method = {
 }
 
 class_decl = {
-    "class" ~ identifier ~ "{" ~ class_fields ~ class_constructor ~ method* ~ "}"
+    export? ~ "class" ~ identifier ~ "{" ~ class_fields ~ class_constructor ~ method* ~ "}"
 }
 
 // ================= TOP LEVEL =================

test/src/my_class.mist

@@ -1,4 +1,4 @@
-class MyClass {
+public class MyClass {
     String message;
 
     public constructor(str* name) {