This file records noteworthy changes.
-0.5.4 (?x?y?z? March 2000)
-* Algorithms in class matrix (determinant and solve) were replaced by
+0.5.4 (15 March 2000)
+* Some algorithms in class matrix (notably determinant) were replaced by
less brain-dead ones and should now have much better performance.
-* Checks were reorganized and split up into three parts:
+* Checks were completely reorganized and split up into three parts:
a) exams (small regression tests with predefined input)
b) checks (lenghty coherence checks with random input)
c) timings (for coherence and crude benchmarking)
* Behaviour of .evalf() was changed: it doesn't .evalf() any exponents.
+* Expanded expressions now remember they are expanded to prevent
+ superfluous expansions.
+* Small bugfixes and improvements in the series expansion.
0.5.3 (23 February 2000)
* A more flexible scheme for registering functions was implemented,