Narrow version bump to only rstantools (>= 2.0.0)

Author: utkarshpawade

DESCRIPTION

@@ -48,13 +48,13 @@ Suggests:
     ggfortify,
     gridExtra (>= 2.2.1),
     hexbin,
-    knitr (>= 1.33),
+    knitr (>= 1.16),
     loo (>= 2.0.0),
     RColorBrewer,
-    rmarkdown (>= 2.11),
-    rstan (>= 2.21.0),
-    rstanarm (>= 2.21.1),
-    rstantools (>= 2.1.0),
+    rmarkdown (>= 1.0.0),
+    rstan (>= 2.17.1),
+    rstanarm (>= 2.17.4),
+    rstantools (>= 2.0.0),
     scales,
     shinystan (>= 2.3.0),
     survival,

NEWS.md

@@ -1,6 +1,6 @@
 # bayesplot (development version)
 
-* Bumped minimum versions for suggested packages (`rstan`, `rstanarm`, `rstantools`, `knitr`, `rmarkdown`) to align with the `R >= 4.1.0` requirement.
+* Bumped minimum version for `rstantools` from `>= 1.5.0` to `>= 2.0.0` because `loo_pit()` and `predictive_error()`, used by `ppc_loo_pit_*()` and `ppc_error_*()` functions, were introduced in `rstantools` 2.0.0.
 * Use `rlang::warn()` and `rlang::inform()` for selected PPC user messages instead of base `warning()` and `message()`.
 * Standardize input validation errors in `ppc_km_overlay()` and interpolation helpers to use `rlang::abort()` for consistent error handling.
 * Fix assignment-in-call bug in `mcmc_rank_ecdf()` (#).