Changes in version 2.19-1                        

    o   There is a new as.data.frame method.

                       Changes in version 2.16-8                        

    o   Both left and right plot margins can be adjusted to allow, for
	example, for long taxon names or long legend labels.

                       Changes in version 2.16-7                        

    o   There is now an example showing how to plot a tree with long
	taxon names.

                       Changes in version 2.16-3                        

    o   Error messages and examples have been improved somewhat.

                       Changes in version 2.16-2                        

    o   The manual and help pages have been streamlined.

                       Changes in version 2.16-1                        

    o   The arguments to the various plot methods have changed.  There
	is now much finer control over the plotting.  In particular,
	one can specify a different palette of colors, adjust the width
	of the margin in which taxon labels are printed, and pass
	options separately to the base-graphics plot, text, and legend
	commands under0lying the ouch plot methods.

    o   A layout bug in plot has been fixed.

                        Changes in version 2.15                         

    o   The plot function now spaces the terminal taxa evenly.

    o   The documentation has received an overhaul.

                        Changes in version 2.14                         

    o   Depends on R>=3.6.  This change necessitated by modifications
	to the default RNG with R version 3.6.

                        Changes in version 2.13                         

    o   Changes to the organization of the package.

                        Changes in version 2.12                         

    o   Upgrade the package license to GPL version 3.

                        Changes in version 2.11                         

    o   Improvements to the underlying C code, which now registers
	callable functions.

                        Changes in version 2.10                         

    o   In glssoln, when the Choleski decomposition fails, a warning is
	issued and NAs are returned.  In previous versions, an error
	was thrown.

                         Changes in version 2.8                         

    o   'as(tree,"data.frame")' now returns a data-frame with rownames
	identical to the node-names (tree@nodes).

    o   Functions that have been deprecated since 2.1-1 have been
	removed.  The argument 'alpha' that was deprecated in favor of
	'sqrt.alpha' in version 2.6-1 has been removed.

                         Changes in version 2.7                         

    o   Fixed typo in the documentation of 'hansen'.  Thanks to Roland
	Sookias for bringing this to my attention.

                         Changes in version 2.6                         

    o   In the 'hansen' function, the use of the argument 'alpha' was
	confusing.  This vector parameterizes the "selection" portion
	of the OU model, which since version 2 has been assumed to be a
	positive-definite matrix (corresponding to stabilizing
	selection).  In particular, it contains the entries of the
	lower-triangular matrix square root of this positive definite
	matrix.  To make the name more mnemonic, this argument has been
	renamed 'sqrt.alpha'.  This is a superficial change meant to
	improve intelligibility: the algorithm itself has not changed.
	To prevent loss of backward compatibility, use of argument
	'alpha' will continue to work, though it will generate a
	warning.  In some future release, use of 'alpha' as an argument
	to 'hansen' will no longer generate a warning but will instead
	be passed through to the control list for 'optim' if
	method='optim' and will otherwise generate an error.

                         Changes in version 2.1                         

    o   Version 2 of ouch represents a major revision.  ouch's
	capabilities have been substantially extended.

    o   support is now provided for multivariate characters.  Inference
	based on multivariate Ornstein-Uhlenbeck and multivariate
	Brownian motion models is now provided.

    o   nonultrametric trees are supported.

    o   the root character state need no longer be estimated.  Instead,
	the root state is assumed to be distributed according to the
	stationary distribution of the OU process.

    o   convenience functions for parametric bootstrap confidence
	intervals are provided.

    o   the new function 'paint' simplifies the specification of
	adaptive regimes in complex phylogenies.

    o   the new function 'ape2ouch' translates trees in the 'phylo'
	format of the ape package into 'ouchtree' format (thanks to Dan
	Ackerly).

    o   The new package is a complete rewrite, using S4 classes.  The
	old functionality from ouch v. 1 remains available, but is now
	deprecated.