Merge pull request #653 from geoffw0/ex-ch-notes

CPP: Additional change notes (for 1.20)

Author: jbj

change-notes/1.20/analysis-cpp.md

@@ -2,6 +2,8 @@
 
 ## General improvements
 
+* The logic for identifying auto-generated files via `#line` directives has been improved.
+
 ## New queries
 
 | **Query**                   | **Tags**  | **Purpose**                                                        |
@@ -13,5 +15,6 @@
 |----------------------------|------------------------|------------------------------------------------------------------|
 | Suspicious pointer scaling (`cpp/suspicious-pointer-scaling`) | Fewer false positives | False positives involving types that are not uniquely named in the snapshot have been fixed. |
 | Unused static variable (`cpp/unused-static-variable`) | Fewer false positive results | Variables with the attribute `unused` are now excluded from the query. |
+| Resource not released in destructor (`cpp/resource-not-released-in-destructor`) | Fewer false positive results | Fix false positives where a resource is released via a virtual method call. |
 
 ## Changes to QL libraries