docs(compartment-mapper): News for parserForLanguage and languageForE…

…xtension

packages/compartment-mapper/NEWS.md

@@ -2,6 +2,13 @@ User-visible changes to the compartment mapper:
 
 # 0.9.0 (2023-08-07)
 
+- Adds `parserForLanguage` and `languageForExtension` options to all modes of
+  operation such that the compartment mapper can analyze and bundle languages
+  apart from the built-in languages, which include `esm` and `cjs`.
+  The `languageForExtension` option provides defaults for the entire
+  application and the `"parsers"` property in individual `package.json`
+  descriptors may extend or override using any of the configured or built-in
+  language parser names.
 - Introduces support for source map generation.
   Look for `computeSourceMapLocation` and `sourceMapHook` in
   [`README.md`](README.md).