Several changes in one:

(1) dictionaries/mappings now have attributes values() and items() as
well as keys(); at the C level, use the new function mappinggetnext()
to iterate over a dictionary.

(2) "class C(): ..." is now illegal; you must write "class C: ...".

(3) Class objects now know their own name (finally!); and minor
improvements to the way how classes, functions and methods are
represented as strings.

(4) Added an "access" statement and semantics.  (This is still
experimental -- as long as you don't use the keyword 'access' nothing
should be changed.)
diff --git a/Include/errors.h b/Include/errors.h
index f2d7b1a..0e5ae9f 100755
--- a/Include/errors.h
+++ b/Include/errors.h
@@ -33,7 +33,9 @@
 
 /* Predefined exceptions */
 
+extern object *AccessError;
 extern object *AttributeError;
+extern object *ConflictError;
 extern object *EOFError;
 extern object *IOError;
 extern object *ImportError;
@@ -59,3 +61,5 @@
 extern void err_input PROTO((int));
 
 extern void err_badcall PROTO((void));
+
+extern object *err_getexc PROTO((void));