2.9.0

What's Changed

• Add warnings about too few or too many samples by @mdboom in #210
• .github: Add ARM64 CI for pyperf by @corona10 in #212
• Add support for profiling benchmarks using perf-record by @mpage in #214
• Prepare 2.9.0 release by @mdboom in #215

New Contributors

• @mpage made their first contribution in #214

Full Changelog: 2.8.1...2.9.0