GA: Test with R 4.0.0

Author: HenrikBengtsson

.github/workflows/R-CMD-check.yaml

@@ -14,13 +14,16 @@ jobs:
         config:
         - { os: windows-latest, r: '3.5'}
         - { os: windows-latest, r: '3.6'}
+        - { os: windows-latest, r: '4.0'}
         - { os: windows-latest, r: 'devel'}
         - { os: macOS-latest, r: '3.5'}
         - { os: macOS-latest, r: '3.6'}
+        - { os: macOS-latest, r: '4.0'}
         - { os: macOS-latest, r: 'devel'}
         - { os: ubuntu-16.04, r: '3.4', cran: "https://demo.rstudiopm.com/all/__linux__/xenial/latest"}
         - { os: ubuntu-16.04, r: '3.5', cran: "https://demo.rstudiopm.com/all/__linux__/xenial/latest"}
         - { os: ubuntu-16.04, r: '3.6', cran: "https://demo.rstudiopm.com/all/__linux__/xenial/latest"}
+        - { os: ubuntu-16.04, r: '4.0', cran: "https://demo.rstudiopm.com/all/__linux__/xenial/latest"}
 
     env:
       R_REMOTES_NO_ERRORS_FROM_WARNINGS: true