Log Message:
(math/R-car) Updated 3.1.2 to 3.1.3

Changes to Version 3.1-3

  o Clarify docs to explain that ... argument is not passed to .vcov
  when it's a function in calls to Anova(), confidence Elliipse(),
  Confint(), deltaMethod(), linearHypothesis(), and S() (suggestion of
  Joe Ritter).

  o make dataEllipse() generic and add default and formula methods
  (with help of Michael Friendly).

  o linearHypothesis() no longer issues a warning when a hypothesis
  matrix is supplied for coefficients whose names include arithmetic
  operators (following report by Robert Baer about unnecessary
  warnings printed by Anova(), which calls linearHypothesis()).

  o deltaMethod() now allows models with aliased coefficients when
  argument singular.ok=TRUE.

  o Anova() method for "coxph" objects no longer computes incorrect LR
  tests for models using the tt argument; in this case, Wald tests are
  substituted (following bug report by Ken Beath).

  o crPlot(), crPlots(), crPlot3d(), and avPlot3d() now invisibly
  return coordinates rather than NULL, as avPlot() and avPlots()
  already did (following query by Jeff Reichman).

  o poTest() supports "polr" models with weights (suggestion of Ken
  Beath).

  o Anova() now supports "clm" and "clmm" objects created by \ 
functions
  in the ordinal package (after report by Karl Ove Hufthammer that the
  default method doesn't work).

  o Anova.default() does more checking for potential problems (after
  report by Karl Ove Hufthammer).

  o Anova.lme() correctly handles models with contrasts different from
  the default contr.treatment (fixing a bug reported by Ben Bolker).

  o Small changes to docs.