Version 3.1.0

What's Changed

• Add benchmarks of SwiftRoaring API overhead by @vsarunas in #29
• feat(minor): read and write portable bytes through RawSpan (rebased #31) by @lemire in #32
• perf: make bitmap storage immutable, test from Swift 5.6 (supersedes #30) by @lemire in #33

New Contributors

• @vsarunas made their first contribution in #29

Full Changelog: v3.0.0...v3.1.0