expose PySTEntry.nested so the symtable module will work
diff --git a/Python/symtable.c b/Python/symtable.c
index 5e67c06..46909fc 100644
--- a/Python/symtable.c
+++ b/Python/symtable.c
@@ -112,6 +112,7 @@
{"symbols", T_OBJECT, OFF(ste_symbols), READONLY},
{"varnames", T_OBJECT, OFF(ste_varnames), READONLY},
{"children", T_OBJECT, OFF(ste_children), READONLY},
+ {"nested", T_INT, OFF(ste_nested), READONLY},
{"type", T_INT, OFF(ste_type), READONLY},
{"lineno", T_INT, OFF(ste_lineno), READONLY},
{NULL}