Revert "deactivate cache for now"

This reverts commit 9999659.

Author: lorenzwalthert

R/zzz.R

@@ -3,12 +3,11 @@
   op <- options()
   op.styler <- list(
     styler.colored_print.vertical = TRUE,
-    styler.cache_name = NULL,
+    styler.cache_name = styler_version,
     styler.addins_style_transformer = "styler::tidyverse_style()",
     styler.ignore_start = "# styler: off",
     styler.ignore_stop = "# styler: on"
   )
-  rlang::warn("Caching feature temporarily disabled and not encouraged to use. See https://github.com/r-lib/styler/issues/584")
   toset <- !(names(op.styler) %in% names(op))
   if (any(toset)) options(op.styler[toset])
   invisible()