-* Added canonicalize_clifford() function that can be helpful when comparing
- expressions containing Dirac matrices.
+* New functions/methods:
+ - canonicalize_clifford() (helpful when comparing expressions containing
+ Dirac matrices)
+ - symmetrize() and antisymmetrize()
+ - numer_denom() (return numerator and denominator)
+ - map() (apply function to subexpressions)
+ - evalm() (evaluate sums and products of matrices)