Merge pull request #63 from olangsrud/R-package-SSBtools

Add R package SSBtools
Thanks for adding this, Øyvind !
Merged. I might make the description more briefly afterwards.

regards, Olav

Author: olavtenbosch

data/software.yaml

@@ -455,6 +455,17 @@
     and doubly robust estimators possibly with high-dimensional covariates.
   gsbpm_name: Estimation and weighting
   gsbpm_number: 5.6 | 5.7
+- type: R package
+  name: SSBtools
+  url: https://cran.r-project.org/package=SSBtools
+  description:  Includes functionality to compute tabular aggregates according to a hierarchical structure. 
+    For example, using the package's functions 
+    [model_aggregate()](https://statisticsnorway.github.io/ssb-ssbtools/reference/model_aggregate.html), 
+    [tables_by_formulas()](https://statisticsnorway.github.io/ssb-ssbtools/reference/tables_by_formulas.html) and 
+    [quantile_weighted()](https://statisticsnorway.github.io/ssb-ssbtools/reference/quantile_weighted.html). 
+    It also is a dependency package for several packages under "Statistical disclosure control".
+  gsbpm_name: Estimation and weighting
+  gsbpm_number: 5.6 | 5.7
 - type: R package
   name: validate
   url: https://cran.r-project.org/package=validate