## 1.3.0

### Query Metadata Changes

* Query metadata tags have been systematically updated for many C# queries. Primary categorization as either `reliability` or `maintainability`, and relevant sub-category tags such as `readability`, `useless-code`, `complexity`, `performance`, `correctness`, `error-handling`, and `concurrency`. Aligns with the established [Query file metadata and alert message style guide](https://github.com/github/codeql/blob/main/docs/query-metadata-style-guide.md#quality-query-sub-category-tags).
* Adjusts the `@security-severity` from 9.3 to 7.3 for `cs/uncontrolled-format-string` to align `CWE-134` severity for memory safe languages to better reflect their impact.

### Minor Analysis Improvements

* The queries `cs/dereferenced-value-is-always-null` and `cs/dereferenced-value-may-be-null` have been improved to reduce false positives. The queries no longer assume that expressions are dereferenced when passed as the receiver (`this` parameter) to extension methods where that parameter is a nullable type.