v8.4

What's Changed

• Fix fast Z2n tutorial command typo by @tuoyl in #188
• Fix parameter passing in _z_n_fast_cached call by @matteobachetti in #190
• Update stingray requirements by @matteobachetti in #191

New Contributors

• @tuoyl made their first contribution in #188

Full Changelog: v8.3...v8.4