Changes in version 0.5.9 (2023-09-01)                  

  - Bug fix in bwCov when bw is NULL.

  - Added function tvCor to calculate the correlation matrix
    correspondent to tvCov

                 Changes in version 0.5.8 (2023-04-19)                  

  - Bug fix in plotfor tvsure objects.

  - Functionality addition in tvCov and bwCov to calculate covariance
    matrices that may vary depending on a random variable.

  - Fixing some parameter documentation.

                 Changes in version 0.5.7 (2022-06-30)                  

  - Bug fix in forecast for tvvar objects with 1 lag. We thank Michael
    Wolf for reporting it to us.

                 Changes in version 0.5.6 (2021-09-22)                  

  - Added package documentation (in "tvReg-package.R", which now also
    includes data documentation).

  - Changed imports in NAMESPACE. Now only the necessary functions of
    plm are imported (to avoid new compatibility issues between packages
    Matrix and plm).

                        Changes in version 0.5.5                        

  - Updated RV dataset and its variables description.
  - Fixed bug in tvARand tvVAR when exogen is only one column.

                 Changes in version 0.5.4 (2021-03-09)                  

  - Added par(ask=FALSE) at the end of plots.
  - Fixed bug in confint for objects obtained with tvFE
  - Fixed bug in predict for objects obtained with tvFE
  - Fixed bug in tvSURE for datasets with different name than data
  - Added kernel function Triweight and make it the default

                 Changes in version 0.5.3 (2020-06-22)                  

  - Added dates in data CEES
  - Changed argument newx for argument newdata in forecast.tvlm,
    forecast.tvar, predict.tvlm and predict.tvar.

                 Changes in version 0.5.2 (2020-04-30)                  

  - Fixed bug in tvPLM and changed the limits of the Epanechnikov
    kernel.
  - Added check for variables size in tvPLM when there are NAs.
  - Added check for class in tvAR main argument.

                 Changes in version 0.5.1 (2020-04-16)                  

  - Fixed bug in method tvSURE when using constraints. Method confint
    works.

                 Changes in version 0.5.0 (2020-02-21)                  

  - Added methods tvPLM, tvRE and tvFE and methods to fit time-varying
    coefficients panel data models. Also added their
    correspondingconfint, predict, forecast, plot, summary and print
    methods.

  - Added dataset OECD

  - Change all return argument tvcoef to coefficients to fit the
    standards of other packages in R

  - Allow the user to choose individual plots for each variable in
    models of class tvlm, tvar or tvplm

  - Fix of the bug in R-devel caused by matrix objects now also
    inheriting from class array which caused some problems in some "if"
    statements

                 Changes in version 0.4.2 (2019-06-30)                  

  - Added modified or leave-(2l+1)-out cross-validation for bandwidth
    selection

  - Faster algorithm for the calculation of confidence intervals

  - Fix bug in `.tvCov.cv

                 Changes in version 0.4.1 (2019-04-08)                  

  - Fix bug in tvGLS.R for option est = "ll".

  - Added a website for the package (with pkgdown).

  - Added README.Rmd and index.Rmd.

  - Updated documentation tvOLS matrix, forecast.tvar, forecast.tvlm and
    forecast.tvsure.

                 Changes in version 0.4.0 (2019-03-27)                  

  - Removed class tvlm from objects of class tvar.

  - Removed deprecated CI.tvlm(), CI.tvar(), CI.tvsure() and CI.tvirf()
    methods.

  - Added predict.tvlm(), predict.tvar(), predict.tvsure() and
    predict.tvvar() methods.

  - Added forecast.tvlm(), forecast.tvar(), forecast.tvsure() and
    forecast.tvvar() methods.

  - Added resid.tvlm(), resid.tvsure(), resid.tvvar() and resid.tvirf()
    for compatility with R standards.