Version 2.2-5.3 2013-05-11  Addition of lwd parameter to sm.regression.
                            All datasets given their own help files.
                            Minor corrections to help files and sm.options.

Version 2.2-4  2010-02-26  sm.ancova returns the boundaries of the reference band.
                           Minor corrections to sm.discontinuity, pause and help files.

Version 2.2-3  2008-09-24  Minor corrections to citation(), density estimation 
                           in 2d and 3d when rpanel is used and sm.discontinuity.  
                           Periodic covariates allowed.  Other small bug fixes.

Version 2.2-2  2007-10-09  Removal of \non_function from geyser.Rd.

Version 2.2-1  2007-09-22  Minor corrections to .onAttach and sm.options.

Version 2.2-0  2007-09-12  Version 2.2 released.

Version 2.1-0  2005-09-01  Version 2.1 released.
                           Adrian Bowman takes over as maintainer.

Version 2.0-14 2005-02-07  Improve messages, support translations
 
Version 2.0-13 2004-11-11  Update sm.density.compare to pre-2.1 after
	                   bug report from Deepayan Sarkar.
			   Scripts trwlgam[13] now work.
			   Use "console" pager on Windows.

Version 2.0-12 2004-09-04  sphimage used a[ind] <- b[ind] with NAs in ind.
	                   Added NAMESPACE.
			   No longer use .sm.home, but system.file.
			   Use package gam in scripts: 
			   trwlgam2 mackgam smackgam now work.

Version 2.0-11 2004-08-04  One .Rd error, data -> smdata, remake INDEX

Version 2.0-10 2004-07-29  Remove references to packages modreg and sm.
			   Make provide_data more careful about where
			   (as 'trees' duplicates a base dataset).

Version 2.0-9 2003-12-18  Set seed for running scripts.

Version 2.0-8 2003-09-12  Avoid 'nlevels' as var name.

Version 2.0-7 2003-07-18  Documentation improvements.

Version 2.0-6 2003-06-03  Avoid generating lty=NA, use PACKAGE=.

2.0-5 was unreleased.

Version 2.0-4 2001/10/10  tree.q did not work in R, minor improvements
                          to documentation.

Version 2.0-3 2001/08/08  QA changes, e.g. T -> TRUE in scripts.

Version 2.0-2 2001/06/12  Many help-file improvements.

Version 2.0-1 2000/12/08  Version 2 of sm, sm.rm(optimize=TRUE) works.

Version 1.0-3 1999/08/15  Moved .sm.home to package:sm, made ts examples work.

Version 1.0-2 1999/04/02  Modified for 0.64, using R's chull, jitter,
			inst/* mechanism, data/00Index, file.* functions.

Version 1.0-1 1999/02/20:

I renamed plot.density (which causes a name clash, and is not a plot method)
to smplot.density.

All the example scripts work except those depending on gam:
	trwlgam1 trwlgam2 mackgam trwlgam3 smackgam

(and the gam in mgcv does not work with these).


R discrepancies:
===============

is.matrix is false for data frames: I used isMatrix in zzz.R instead.

Colours are (mainly) named in the R version.

In polygon() border gives the colour, not a logical for plotting.

points() does not use the current cex and pch in R.

Labels formed by deparse(substitute(x)) need to evaluated before x is altered.

persp() has fewer arguments, and the default viewpoint did not seem a
good choice for these plots, so I altered it.

glm.fit() has different arguments, and the X matrix must have column names.
Further, weight-0 points do not get the linear predictor set.

is.na(x) fails in R if x is NULL.

Some functions used `break' where `return()' was meant: this does not
work in R.

The uses of unix() and assign() needed revising.

detach() named objects seemed to fail, so I used pos= instead.

BDR 99/02/20