WoodSimulatR 0.6.2

Update the links in the documentation, especially those which link to functions in other packages, so that roxygen2 automatically creates the correct links. This is relevant for functions which are documented under topics which differ from the function name. At the moment, however, this is mostly a cosmetic update.

WoodSimulatR 0.6.1

simbase_covar() allows the use of transformations, for which it relies on the package scales. It verifies that the transformation are of class trans. In version 1.3.0 of scales, the class name of transformation was renamed from trans to transform.
- As an intermediate solution, both class names trans and transform are now allowed.
- The simbase objects stored in WoodSimulatR were updated to the new class name transform.
Removed the .data pronoun, because it is deprecated in tidyselect expressions since tidyselect version 1.2.0. As an alternative way to remove the NOTE about “undefined global variables” which are actually due to non-standard evaluation, the variables in question are set to NULL at the beginning of each involved function, as recommended by the vignette “Importing data.table” from the data.table package.
Corrected a typo in the help for simbase_covar()

Major overhaul of simulate_dataset():
- Corrected bug that created errors when only one variable was defined by *_mean and *_sd in the argument subsets.
- Made warning and error messages more explicit and clear.
- Added examples.
- Added a parameter RNGversion and changed the default of RNGversion from "3.5.0" to "3.6.0". This followed an improvement in random number generation that was introduced in R version 3.6.0 (see the R help on RNGversion()). The new parameter RNGversion was added to enable perfect reproducibility of simulated data sets generated with earlier versions of WoodSimulatR.
- Added the possibility to use different identifier columns in the subsets parameter.
- Updated the documentation accordingly and corrected some typos – in particular, the documentation mentioned a “WoodGradeR” package, but it should be “WoodSimulatR”.
Removed bug which meant that force_positive=FALSE didn’t work with objects of class simbase_list.
Added information on the origin and species of the underlying sawn timber in the help on simbase.
Added the unit “N/mm^2” of the variable ip_f in the help on simbase.
Added Date entry in the DESCRIPTION.
Added link to Holzforschung Austria in README.md, which got lost due to a mistake in README.Rmd.
Slight update to the vignette “woodsimulatr_basics”, especially to show the new possibility to use different identifier columns in the call to simulate_dataset().