Changes in version 0.5-38 (2024-05-20)                 

    o   removed a test that gives slightly different results on CRAN's
	"M1mac" (no user-visible changes)

                 Changes in version 0.5-36 (2022-08-07)                 

    o   a few minor internal improvements (no user-visible changes)

                 Changes in version 0.5-34 (2022-02-28)                 

    o   the margEff() method for objects of class censReg now has an
	additional argument vcovLogSigma, which defaults to TRUE; this
	change makes the margEff() method consistent with the coef()
	and vcov() methods but it changes the default way of
	calculating marginal effects compared to the previous version

                 Changes in version 0.5-32 (2020-08-04)                 

    o   added argument subset to function censReg()

    o   added argument vcov to the margeff() method for objects of
	class censReg.

    o   made the tests of this package compatible with version 1.4-0 of
	the maxLik package

                 Changes in version 0.5-30 (2019-12-13)                 

    o   censReg() can now estimate models that only have an intercept
	and no (other) explanatory variables

    o   made the output of the test scripts much more robust to
	differences in numerical inaccuracies

                 Changes in version 0.5-26 (2017-03-21)                 

    o   some minor internal improvements and modifications, e.g. to
	make the 'censReg' package compatible with future versions of
	the 'plm' package

                 Changes in version 0.5-22 (2016-08-20)                 

    o   added argument 'xValues' to the margEff() method so that the
	user can specify the values of the explanatory variables, at
	wich the marginal effects are calculated

    o   censReg() now stops with an error message if there are no
	uncensored observations or there are no censored observations

                 Changes in version 0.5-20 (2013-08-20)                 

    o   fixed an internal problem so that this package can be used with
	R version 3.1

    o   fixed a few minor internal problems that were indicated by "R
	CMD check" with R version 3.1

                 Changes in version 0.5-16 (2012-10-12)                 

    o   corrected bug in the calculation of the covariance matrix of
	the marginal effects: hence, all statistical tests for the
	marginal effects were wrong in previous versions of the censReg
	package

    o   added print() method for objects that are returned by the
	margEff() method

                 Changes in version 0.5-14 (2012-06-29)                 

    o   the calculation of the gradients of the log-likelihood function
	for cross-sectional data is numerically more stable

                 Changes in version 0.5-12 (2012-06-01)                 

    o   added nobs() method that returns the (total) number of
	observations

                 Changes in version 0.5-10 (2012-04-12)                 

    o   added margEff() method that computes the marginal effects of
	the explanatory variables on the expected value of the
	dependent variable evaluated at the mean values of the
	explanatory variables. This functionality is currently not
	available for panel data models.

                 Changes in version 0.5-8 (2012-03-04)                  

    o   censReg() has an argument "logLikOnly" now: if this argument is
	set to TRUE, the model is not estimated but the log-likelihood
	contributions of all observations/individuals and the
	corresponding gradients calculated at the parameters specified
	by argument "start" are returned

    o   made the calculation of the log-likelihood value of random
	effects panel data models with censored dependent variables and
	the calculation of the corresponsing gradient(s) numerically
	more robust and stable by calculating and storing the
	*logarithms* rather than the actual numbers

                 Changes in version 0.5-6 (2011-09-06)                  

    o   fixed bug that made it impossible to specify starting values
	for the estimation of censored random-effects panel data models
	(many thanks to Igors Lahanciks for reporting this bug!)

                 Changes in version 0.5-4 (2011-05-17)                  

    o   fixed bug that occured when a factor had "empty" levels (many
	thanks to Ulrich Morawetz for reporting this bug!)

    o   censReg() now additionally returns the model terms and the
	degrees of freedom of the residuals

    o   added a model.frame() method for objects of class "censReg"

    o   added a formula() method for objects of class "censReg"

    o   added extractAIC() method for objects of class "censReg"

    o   added estfun() method for objects of class "censReg" that has
	an argument "includeSigma" (defaults to TRUE), which determines
	whether the derivative with respect to the logarithm of the
	variance parameter should be included

                 Changes in version 0.5-2 (2010-08-25)                  

    o   initial public release of the censReg package