Add change notes for preprocessor directives

tamasvajk · tamasvajk · commit fd09883bfeed · 2021-02-04T08:42:39.000+01:00
diff --git a/csharp/change-notes/2021-02-01-Preprocessor-directives.md b/csharp/change-notes/2021-02-01-Preprocessor-directives.md
@@ -0,0 +1,8 @@
+lgtm,codescanning
+* The `PreprocessorDirective` class and its base classes have been added to support
+preprocessor directives, such as `#if`, `#define`, `#undef`, `#line`, `#region`,
+`#warning`, `#error`, `#pragma warning`, `#pragma checksum` and `#nullable`. Furthermore,
+`#line` directives are now taken into account when querying the location of any
+code construct. Files referenced in preprocessor directives are also included in the
+extraction sources. This change is expected to lead to better error reporting locations
+in generated code, such as generated code from `.cshtml` files in ASP.NET Core.
