Update cpp/ql/lib/change-notes/released/0.3.1.md
Update cpp/ql/lib/change-notes/released/0.3.1.md
github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql