This file records noteworthy changes.
-0.9.1 (<date>)
+0.9.2 (31 July 2001)
+* Epsilon tensor is more functional.
+* simplify_indexed() is better at detecting expressions that vanish for
+ symmetry reasons.
+* Several little bugfixes and consistency enhancements.
+
+0.9.1 (27 June 2001)
+* Ctors of class numeric are not explicit any more. All built-in callers for
+ pseudofunctions are now templated and default to ex arguments which relaxes
+ the need for explicit ctors.
* New functions/methods:
- - remove_first() and remove_last() for lists
+ - find()
+ - remove_first(), remove_last(), sort() and unique() for lists
- symmetrize_cyclic()
+ - decomp_rational()
* Instead of just totally symmetric or antisymmetric, complex symmetries
can now be defined for indexed objects. Symmetries are described by a
tree of "symmetry" objects that is constructed with the sy_none(),
sy_symm(), sy_anti() and sy_cycl() functions. The symmetry of a function
with respect to its arguments can also be defined (this is currently
only used for the Beta function).
-* color_trace() and dirac_trace() can be applied to a more general class
- of expressions, e.g. using it on a relation will take the trace on both
- sides etc.
* Generalized map() to take a function object instead of a function pointer.
This allows passing an arbitrary number of additional state to the
function being called.
+* color_trace(), dirac_trace(), diff(), expand(), evalf() and normal() work
+ better with container classes, e.g. using color_trace() on a relation will
+ take the trace on both sides, using diff() on a matrix differentiates every
+ element etc.
+* diff() works properly with non-commutative products and indexed objects.
+* New option flag "expand_function_args" for expand().
* Supplement some (now deprecated) macros by inlined template functions:
- is_of_type(foo, type) -> is_a<type>(foo)
- is_ex_of_type(foo, type) -> is_a<type>(foo)
- is_exaclty_of_type(foo, type) -> is_exaclty_a<type>(foo)
- is_ex_exaclty_of_type(foo, type) -> is_exaclty_a<type>(foo)
- ex_to_foobar(baz) -> ex_to<foobar>(baz)
+* rem(c, p[x], x) (c: numeric, p[x]: polynomial) erroneously returned p[x]
+ instead of c.
+* Small bugfixes in pattern matching.
+* Updated libtool to version 1.4.
0.9.0 (7 June 2001)
* In the output and in ginsh, lists are now delimited by { } braces, and