C++: Add change-note.

MathiasVP · MathiasVP · commit 3e21f479a99e · 2021-05-11T14:58:48.000+02:00
diff --git a/cpp/change-notes/2021-03-11-overflow-abs.md b/cpp/change-notes/2021-03-11-overflow-abs.md
@@ -0,0 +1,2 @@
+lgtm
+* The `cpp/tainted-arithmetic`, `cpp/arithmetic-with-extreme-values`, and `cpp/uncontrolled-arithmetic` queries now recognize more functions as returning the absolute value of their input. As a result, they produce fewer false positives.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+lgtm`
	`2`	+* The `cpp/tainted-arithmetic`, `cpp/arithmetic-with-extreme-values`, and `cpp/uncontrolled-arithmetic` queries now recognize more functions as returning the absolute value of their input. As a result, they produce fewer false positives.