C#: Add change note

hvitved · hvitved · commit 129deb0a0084 · 2020-11-23T16:09:33.000+01:00
diff --git a/csharp/change-notes/2020-11-05-get-sourcedeclaration-rename.md b/csharp/change-notes/2020-11-05-get-sourcedeclaration-rename.md
@@ -0,0 +1,4 @@
+lgtm,codescanning
+* The predicate `Declaration::getSourceDeclaration/0` has been renamed to `Declaration::getUnboundDeclaration/0`.
+  This is to avoid confusion, as it has nothing to do with declarations from source code (as opposed to declarations
+  in assemblies), but instead has to do with generics.
