Changes in version 3.0.4 (2025-08-18)                  

    o   No functional changes; only package anchors for \link{} targets were added.

                 Changes in version 3.0.3 (2022-08-28)                  

    o   No functional changes; only unit tests were updated.

                 Changes in version 3.0.0 (2020-03-01)                  

    o   Extend `scalability()` function to accept additional parameter `gamma`.

    o   Removed R-squared in `summary()` output as it is not valid for nonlinear
	regression.

    o   Implemented method `sigma` to extract the residual standard deviation.

    o   Implemented methods `optimal.scalability()` and `limit.scalability()`
	to determine scalability bounds.

    o   Print scalability bounds in `summary()` output and optionally include these
	bounds in the `plot()` output.

                 Changes in version 2.0.0 (2020-01-09)                  

    o   Version 2.0.0 is a major update that includes some breaking changes. The
	Universal Scalability Law has evolved from the original two coefficient
	formula into a three coefficient formula to obviate the need for parameter
	normalization. The following changes are made to align the package with
	the current use:
	- The previously used coefficients `sigma` and `kappa` are renamed to
	  `alpha` and `beta`.
	- A new coefficient `gamma` is introduced. This coefficient corresponds
	  to the scale factor calculated in earlier versions when parameter
	  normalization was used.
	- The `default` method of the `usl()` function is no longer a separate
	  solver method as normalization has been removed. Calling the function
	  with either no or the `default` value for the `method` parameter will
	  internally use the `nlxb` implementation.

                 Changes in version 1.8.0 (2017-08-07)                  

    o   The `nlsr` package will replace the older `nlmrt` package. The package has
	been updated accordingly.

                 Changes in version 1.7.0 (2016-10-14)                  

    o   The `summary()' command now shows the t-value and the two sided p-value for
	the coefficients sigma and kappa.

                 Changes in version 1.6.0 (2016-06-18)                  

    o   Remove unused parameter `R' from the signature of the `confint()' function.

    o   Add additional section about multivalued data to vignette.

                 Changes in version 1.5.0 (2016-02-25)                  

    o   Use method `nlxb' as fallback if the value for the scale factor is missing
	in the data and the `default' method is used. A warning message is printed
	in this case. This is more user-friendly than the error message given
	before.

    o   Remove unused parameter `R' from the signature of the `usl()' function.

                 Changes in version 1.4.1 (2014-12-29)                  

    o   Depend on `methods' package instead of importing it. This fixes a problem
	with calling `usl()' from Rscript.

    o   Minor fixes concerning coding style and typos.

                 Changes in version 1.4.0 (2014-11-05)                  

    o   Add new method `overhead()' to calculate the overhead in execution time
	caused by contention and coherency delays.

                 Changes in version 1.3.1 (2014-06-20)                  

    o   Fix vignette for TeXLive 2014.

                 Changes in version 1.3.0 (2014-06-02)                  

    o   The estimation of standard errors for the coefficients has been rewritten.
	Bootstrapping is no longer used for the calculation. Therefore the argument
	`R' for the `usl()' function and the argument `type' for the `confint()'
	function have been deprecated. The arguments will be removed in the next
	release.

    o   Added coefficient standard errors and residual standard error to the summary
	output.

    o   Added implementation for the df.residual() function to get the degrees of
	freedom for the model.

    o   Removed misleading calculation of deviance.

    o   Used roxygen2 4.0.1 to generate the documentation.

    o   Added a new demo data set `oracledb'.

                 Changes in version 1.2.2 (2014-04-03)                  

    o   Use roxygen2 3.1 to generate documentation.

    o   Fix handling of unsorted input data frame for method="default".

                 Changes in version 1.2.1 (2013-08-13)                  

    o   Adapt to `nlmrt' version 2013-8.10

                 Changes in version 1.2.0 (2013-04-29)                  

    o   Added function `confint()' to estimate parameter confidence intervals.

                 Changes in version 1.1.0 (2013-02-26)                  

    o   Added a package vignette.

    o   Use `Import' instead of `Depend' for the used packages.

    o   Function `efficiency()' now returns a named vector. The names are the
	values of the independent variable, cf. `fitted()' or `residuals()'.

                 Changes in version 1.0.0 (2013-02-10)                  

    o   Initial release on CRAN