C#: Add change note

hvitved · hvitved · commit c96b8301ed8a · 2021-03-24T09:58:44.000+01:00
diff --git a/csharp/change-notes/2021-03-24-cil-ssa.md b/csharp/change-notes/2021-03-24-cil-ssa.md
@@ -0,0 +1,2 @@
+lgtm,codescanning
+* A static single assignment (SSA) library has been added to the CIL analysis library. The SSA library replaces the existing `DefUse` module, which has been deprecated.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+lgtm,codescanning`
	`2`	+* A static single assignment (SSA) library has been added to the CIL analysis library. The SSA library replaces the existing `DefUse` module, which has been deprecated.