Changes in version 1.6 (2025-07-09)                   

    o   garchx(): new value "hac" on the vcov.type argument

    o   vcov.garchx(): new value "hac" on the vcov.type argument

    o   new function: confint.garchx()

                  Changes in version 1.5 (2022-09-13)                   

    o   version 1.4 did not pass the CRAN checks

    o   garchxSim(): new argument 'c.code'

    o   recursions.c: to avoid the 'ordered comparison of pointer with integer zero' warning, integer comparisons were modified to !=

    o   new function: refit.garchx(), in response to a suggestion by Viatalie Spinu, see https://github.com/gsucarrat/garchx/issues/3

    o   class checking in ttest0() and waldtest0() is now done with is()

    o   minor changes to DESCRIPTION file, and to help-files garchx-package.Rd, garchx.Rd, garchxSim.Rd and ttest.Rd

                  Changes in version 1.3 (2021-07-15)                   

    o   garchx():
	- the non-default value on the backcast.values argument changed, see documentation
	- new argument: estimate
	- minor changes to the documentation

    o   garchxObjective(): an additional (positivity) check of the parameters was added; the check is only undertaken when the xreg' argument in garchx() is not NULL

    o   predict.garchx(): the default of the n.sim argument changed to NULL

    o   toLatex(): minor changes to the print

    o   print.garchx(): minor changes to the print

    o   new functions: gdiff(), glag()

    o   fix: the returned value from garchxSim(1, verbose=TRUE) is now a matrix

                  Changes in version 1.2 (2021-01-23)                   

    o   fix: the initial.values argument in garchx() can now be non-NULL

                  Changes in version 1.1 (2020-05-10)                   

    o   garchx():
	- c.code argument: new default TRUE
	- new argument: vcov.type
	- for consistency with the garch() function in the 'tseries' package, the arch and garch orders changed place in the order argument, i.e. order[1] now refers to the garch order, and order[2] now refers to the arch order
	- the 'verbose' argument (w/default TRUE) has been renamed to 'turbo' (w/default FALSE)

    o   garchxRecursion(): improved speed when the garch order is 1 or greater, since the function now uses compiled c-code for the recursion

    o   garchxAvar(): new function, computes the asymptotic coefficient-covariance of a model by simulation

    o   garchxObjective(): minor changes for improved numerical robustness

    o   vcov.garchx(): new argument vcov.type

    o   fitted.garchx(): new argument as.zoo (logical)

    o   residuals.garchx(): new argument as.zoo (logical)

    o   new functions:
	- nobs.garchx()
	- predict.garchx()
	- quantile.garchx()
	- toLatex.garchx()
	- ttest0()
	- rmnorm()
	- waldtest0()

    o   fixes:
	- garchxSim(): now works when the asym order is greater than 1
	- vcov.garchx(): now works when verbose/turbo=FALSE in the garchx object it is applied to
	- print.garchx(): now works when verbose/turbo=FALSE in the garchx object it is applied to

                  Changes in version 1.0 (2020-04-08)                   

    o   Package released on CRAN, the version numbering '1.0' means the release is considered to be fairly stable and well-tested