This file records noteworthy changes.
+1.0.6 (4 March 2002)
+* "(x+1).subs(x==x-1)" now returns the correct result "x" instead of "x-1".
+
1.0.5 (27 January 2002)
* (l)degree(s), coeff(s, n) and collect(s) were extended to accept expressions
of any class (except add/mul/ncmul/numeric) for "s". They should even work