v1.5.1

What's Changed

• ci: bump actions/checkout from 4 to 5 by @dependabot[bot] in #108
• ci: bump actions/setup-python from 5 to 6 by @dependabot[bot] in #109
• Add diagnostics sensor for actual sample time by @bvweerd in #114
• Add history tracking to PID diagnostics by @bvweerd in #113
• Add sample time history to diagnostics by @bvweerd in #115
• Clarify integral behaviour in README by @bvweerd in #117
• ci: bump actions/stale from 9 to 10 by @dependabot[bot] in #118
• Fix setpoint decimal value handling in UI by @bvweerd in #121

Full Changelog: v1.5.0...v1.5.1