Version 1.0-11 (2013-08-20)
o Cosmetic changes to pass CRAN checks
o For R 3.1.0, revised vcov.mlm() to avoid calling summary.mlm() directly
o fixed long lines in .Rd files for R 3.0.1 checks
o removed require() calls for MASS & car (Depends:)
o removed ::: calls to car and stats

Version 1.0-10 (2013-06-03)
o Added demo/HE-other.R, exploring other representations of HE plots

Version 1.0-9 (2013-04-19)
o Added Pottery2 data, extending car::Pottery
o Fixed heplot3d to minimize striated rendering of ellipsoids, and also modified default
  colors and fill.alpha

Version 1.0-8 (2013-02-22)
o In heplot.mlm(), added ... to label.ellipse to be able to pass cex=
o Added NLSY data with examples of testing linearHypotheses
o In heplot3d(), rgl.* functions replaced with *3d() equivalents
o Extended gsorth description and examples
 

Version 1.0-7 (2013-02-07)
o Made some heplot3d() examples \dontrun{} to reduce example execution time to satisfy CRAN nits

Version 1.0-6 (2013-01-14)
o Added label.ellipse() as a more general exported function.
o heplot() gets a label.pos= argument allowing more flexible labeling, with
  the label position to be specified (bottom, left, top, right or center)
o Added coefplot S3 generic and a coefplot.mlm method to plot ellipses for mlm coefficients.
  This generalizes car::confidenceEllipse to the mlm setting.

Version 1.0-4 (2012-12-29)
o Added interpPlot for plotting interpolations between two data sets, with data ellipses, etc.
  Main use for this is in animated demos of multivariate statistical concepts.
o interpPlot gains add=, points= and col= arguments for greater control of graphical parameters.

Version 1.0-2 (2012-12-05)
o Added schooldata and further example of comparison of mlm with robmlm()

Version 1.0-1 (2012-10-18)
o Added simple robmlm methods for robust mlms with print and summary methods and a vcov.mlm method.
  This allows heplot() and related methods to show robust HE plots.

Version 1.0-0 (2012-6-3)
o Added Olso data
o Corrected error in demo/OBK.R

Version 0.9-13 (2012-5-18)
o Extended HE-examples vignette with example based on SocGrades data

Version 0.9-12 (2012-04-03)
o Added Skulls data
o Extended HE-examples vignette with example based on Skulls data
o Changed the default colors for heplot() and heplot1d() to allow global setting
  of options("heplot.colors"); similarly, heplot3d() now allows a global option
  for colors, options("heplot3d.colors"), differing only in using pink for error
  ellipsoid.
o Extended Hernior.Rd examples to show 1D plots in canonical space; added a discussion of
  this example to HE-examples vignette.
o Extended SocGrades.Rd examples to show plots in canonical space.

Version 0.9-11 (2012-01-12)
o Added Probe1, Probe2 data sets-- repeated measures design
o Added Sake data

Version 0.9-10 (2011-09-12)
o Fixed Authors@R in DESCRIPTION for R 2.14.x
o Added var.labels argument to pairs.mlm
o gsorth.R: Made sd() a local function to avoid deprecated warnings

Version 0.9-9 (2011-06-10)
o Added data(Hernior), another MMRA, cancorr example data set
o Added data(SocGrades), another MANOVA, MMRA, cancorr example data set
o Corrected buglet with fill.alpha in heplot

Version 0.9-8 (2011-04-8)
o Added an MMRA example to HE-examples vignette
o Added err.label argument to heplot and heplot3d to allow changing the label for the error ellipsoid

Version 0.9-7 (2010-11-4)
 o Added trans.colors() to make colors transparent
 o Modifications to heplot() for filled ellipses: added fill= and fill.alpha= arguments; replaced lines() 
   with polygon() for H and E ellipses; calculate H.rank to distinguish degenerate ellipses
 o added last() to utility.R 
 o Modified some examples to show fill=TRUE and use wire=FALSE in heplot3d()
 o Modified pairs.mlm() to pass fill= and fill.alpha= to heplot()
 o Updated reference URLs to point to datavis.ca
 o Fixed buglet in gsorth when matrix has no row/col names [Thx: mekki@mektek.ca]
 o Fixed buglet in etasq.lm with partial=FALSE [Thx: i.e.holliday@aston.ac.uk]
 
 Version 0.9-6 (2010-11-2)
 o added CITATION to JSS article and references to .Rd files
 o modified repeated vignette to [nojss]
 
 Version 0.9-5 (2010-10-01)
 o Added repeated vignette 

 Version 0.9-4 (2010-07-29)
 o Minor documentation changes
 o Added etasq.lm() method
 o Added data/MockJury - 1-way and 2-way MANOVA, step-down tests, ANCOVA
 o Generalized termMeans() and exported it
 o Added HE-examples vignette
 
 Version 0.9-3 (2010-07-27)
 o Added gsorth() for Gram-Schmidt orthogonalization of a matrix or data frame, preserving
    column means and standard deviations
 o Avoid Deprecated warnings (linear.hypothesis) with car2
 o Fixed documentation warnings with car2 (linear.hypothesis, data.ellipse) 
 
 Version 0.9-2 (2010-02-12)
 o Added demo/Big5.R - Analysis of scores on the 'Big 5' personality traits for three groups
 o fixed buglet with text3d causing rgl to crash (thx: Duncan Murdoch)
 o switched inst/CHANGES to NEWS
 o Added data/RatWeight and examples - repeated measures on Weight Gain in Rats
 o Added data/Headache and examples - repeated measures on treatment for headaches
 o Fixed buglets in heplot, heplot1d, heplot3d regarding number of variables
 o Added etasq.mlm methods for multivariate measures of association (\eta^2)
 o Return ellipse radius from heplot, heplot3d

Version 0.9-1 (2010-01-1)
 o heplot.mlm, pairs.mlm, heplot3d.mlm now work for repeated measure designs
   with only covariates on the rhs.
 o Implemented heplot1d() for repeated measures designs (untested)
 o Revised documentation for repeated measures
 o Added center.cex to heplot.mlm()
 o Revised mark.H0() to handle 3D plots also
 o Added Adoption data -- MMreg with repeated measures
 o Added ReactTime data -- 2 within-S, no between-S factors
 o Fixed bug with icontrasts
 o Added markH0 argument to heplot
 o Added label argument to mark.H0()
 o Added arrow3d()
 o Fixed buglet in pairs.mlm (type)
 
Version 0.9-0 (2009-12-25)
 o Implemented 2D HE plots in heplot.mlm for repeated measures designs by adding
   idata=, idesign=, icontrasts= arguments.  
 o imatrix= argument  for doubly-multivariate designs implemented, but depends on car 2.0+
 o Updated example(OBK) 
 o Updated example(WeightLoss)
 o Implemented 3D HE plots in heplot3d.mlm for repeated measures designs (OK)
 o Implemented pairs() for repeated measures designs (OK)

Version 0.8-11 (2009-12-08)
 o Minor fixes to heplot1d
 o Added contrasts example to RootStock.Rd
 o Added WeightLoss data -- doubly multivariate
 o Added mark.H0

Version 0.8-10 (2009-10-10)
 o Fixes to cross-references in .Rd files.

Version 0.8-9 (2009-06-19)
 o Added data(RootStock)
 o heplot.mlm, heplot3d.mlm now include center in the returned object
 
Version 0.8-8 (2009-06-04)
 o Added data(FootHead)
 o Extended example(FootHead)

 Version 0.8-7 (2009-04-17)
 o Initial version of heplot1d
 o Added data(Bees), demo(bees.contrasts)
 o Now suggest: effects package

Version 0.8-6 (2009-04-11)
 o Added VocabGrowth data, with an example of heplot() for a repeated measures design
 o Fixed label.ellipse in heplot.mlm.R to center the label horizontally
 o Added demo(OBK)
 o Added axes= to heplot.mlm to fix warnings arising from axes=FALSE in pairs.mlm 
 
Version 0.8-5 (2009-01-26)
 o Minor documentation changes for Rdoc 2
 o Michael Friendly as maintainer

Version 0.8-4 (2008-11-17)
 o Documentation additions
 o added CITATION file

Version 0.8-3 (2008-11-6)
 
* Changes to heplot3d.mlm:
 o  added xlim, ylim, zlim arguments

Version 0.8-2 (2008-10-22)

* Package changes
 o  added suggests: candisc
 o  added utility.R, cross3d.R

* Changes to heplot.mlm:
 o  moved lambda.crit to utility.R
 o  added he.rep to handle common task of repeating HE argument values

* Changes to heplot3d.mlm:
 o  added shade=, shade.alpha=, wire= parameters
 o  fixed: grand.mean=FALSE not respected
 o  replaced sphere at grand.mean with cross3d()
 o  color means according to the color of the term
 o  return bounding boxes of the ellipsoids
 o  replaced rgl.texts with texts3d
 
* Changes to utility.R:
 o  Generalized lambda.crit to provide Roy.crit and HLT.crit; only Roy.crit is used
 
Version 0.8-1 (2007-05-23)

 o  heplot now passes ... not only to plot() but to calls to text() and points().

Version 0.8-0 (2007-01-31)

o Initial version released to CRAN.