Version 5.1.0rc4

New features

• feat: improve uproot.futures compatibility with concurrent.futures by @lobis in #983
• feat: Use a single handler argument on uproot.reading.open by @lobis in #971
• feat: fsspec source non-blocking chunks by @lobis in #979

Bug-fixes and performance

• fix: support Content objects in writing by @agoose77 in #986

Other

(none!)

Full Changelog: v5.1.0rc3...v5.1.0rc4