document R version for parser versions and drop 3.3

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

@@ -21,12 +21,12 @@ jobs:
           - {os: macOS-latest,   r: 'devel'}
           - {os: macOS-latest,   r: 'release'}
           - {os: windows-latest, r: 'release'}
-          - {os: windows-latest, r: '3.6'}
+          - {os: windows-latest, r: 'oldrel'}
           - {os: ubuntu-16.04,   r: 'release', rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
           - {os: ubuntu-16.04,   r: 'oldrel',  rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
+          - {os: ubuntu-16.04,   r: '3.6',     rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
           - {os: ubuntu-16.04,   r: '3.5',     rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
           - {os: ubuntu-16.04,   r: '3.4',     rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
-          - {os: ubuntu-16.04,   r: '3.3',     rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
 
     env:
       R_REMOTES_NO_ERRORS_FROM_WARNINGS: true

NEWS.md

@@ -61,7 +61,9 @@
 * `multi_line` attribute in parse table is now integer, not boolean (#782).
 * style guide used in Addin is verified when set via R option (#789).
 * improve pkgdown author URLs (#775).
-* Upgrade touchstone infra ().
+* Upgrade touchstone infra (#799).
+* Don't test on R 3.3. anymore as tidyverse 
+  [supports only four previous releases](https://www.tidyverse.org/blog/2019/04/r-version-support/) (#804).
 
 # styler 1.4.1
 

R/environments.R

@@ -13,9 +13,9 @@
 #'
 #' We version the parser as follows:
 #'
-#' * version 1: Before fix mentioned in #419.
-#' * version 2: After #419.
-#' # version 3: After #582.
+#' * version 1: Before fix mentioned in #419. R < 3.6
+#' * version 2: After #419. R >= 3.6
+#' # version 3: After #582. R >= 4.0
 #'
 #' The following utilities are available:
 #'