This file records noteworthy changes.
1.3.0 (<insert date>)
+* Fixed infinite recursion in atan2_evalf() and improved atan2_eval().
+* Added automatic evaluations for trigonometric functions with negative
+ arguments (e.g. sin(-2) -> -sin(2)).
1.2.0 (19 March 2004)
* Added a structure<T> template class for the easy creation of user-defined