improve news text

Author: pfistfl

NEWS.md

@@ -3,8 +3,9 @@
 # mcboost 0.4.2
 * Removed new functionality for survival tasks added in `0.4.0`. 
   A dependency, `mlr3proba` was removed from CRAN for now.
-  The functionality will be added back later when `mlr3proba` is re-introduced to CRAN.
+  The functionality will be added back when `mlr3proba` is re-introduced to CRAN.
   Users who wish to use `mcboost` for `survival` are adviced to use version `0.4.1` usetogether with the GitHub version of `mlr3proba`.
+* Improved stability of unit tests and example checks on CRAN.
 
 # mcboost 0.4.1
 * Fixed unit error in unit tests that led to non-passing unit tests with new mlr3proba version.