Update NEWS.md

NEWS.md

@@ -2,6 +2,11 @@
 
 - More consistent and intuitive handling of JSON input / output user settings (#195, #196; see `?qgis_using_json_output`).
 - Fix bug in support for environment variable `R_QGISPROCESS_DETECT_NEWER_QGIS` (#197).
+- QGIS or third-party providers can expose deprecated algorithms that may be removed from future versions.
+`{qgisprocess}` now handles these algorithms explicitly (#198):
+  - `qgis_run_algorithm()` and other functions (such as `qgis_show_help()` and `qgis_get_description()`) will warn if a deprecated algorithm is passed (feature request #194; original issue #193).
+  - `qgis_search_algorithms()` now **excludes** deprecated algorithms by default; they can still be included by setting the `include_deprecated` argument to `TRUE`.
+  - `qgis_algorithms()` can _optionally_ restrict its results to non-deprecated algorithms (set the `include_deprecated` argument to `FALSE`). By default they are included, just as before.
 
 # qgisprocess 0.2.0