* Powers of indexed objects are now parenthesized correctly in LaTeX output.
* Input parser handles indices (they have to be specified in the same list
as the symbols).
+* Added some limited support for subspaces in the idx and tensor classes.
+* Fixed a bug in canonicalize() (antisymmetric canonicalization of an already
+ sorted list containing two or more equal objects failed to return 0).
1.0.9 (11 June 2002)
* simplify_indexed() now raises/lowers dummy indices to canonicalize the index