This is a pre-release. To depend on this version, use rand = "=0.9.0-alpha.0" to prevent automatic updates (which can be expected to include breaking changes).

Generators

• Change SmallRng::seed_from_u64 implementation (#1203)
• Replace SeedableRng impl for SmallRng with inherent methods, excluding fn from_seed (#1368)

Sequences

• Simpler and faster implementation of Floyd's F2 (#1277). This
  changes some outputs from rand::seq::index::sample and
  rand::seq::SliceRandom::choose_multiple.
• New, faster algorithms for IteratorRandom::choose and choose_stable (#1268)
• New, faster algorithms for SliceRandom::shuffle and partial_shuffle (#1272)
• Re-introduce Rng::gen_iter (#1305)
• Split trait SliceRandom into IndexedRandom, IndexedMutRandom, SliceRandom (#1382)

Distributions

• {Uniform, UniformSampler}::{new, new_inclusive} return a Result (instead of potentially panicking) (#1229)
• Uniform implements TryFrom instead of From for ranges (#1229)
• Uniform now uses Canon's method (single sampling) / Lemire's method (distribution sampling) for faster sampling (breaks value stability; #1287)
• Relax Sized bound on Distribution<T> for &D (#1278)
• Explicit impl of sample_single_inclusive (+~20% perf) (#1289)
• Impl DistString for Slice<char> and Uniform<char> (#1315)
• Let Standard support all NonZero* types (#1332)
• Add trait Weight, allowing WeightedIndex to trap overflow (#1353)
• Rename WeightedError to WeightError, revising variants (#1382)

SIMD

• Switch to std::simd, expand SIMD & docs (#1239)
• Optimise SIMD widening multipy (#1247)

Other

• Bump MSRV to 1.60.0 (#1207, #1246, #1269, #1341)
• Improve thread_rng related docs (#1257)
• Add Cargo.lock.msrv file (#1275)
• Docs: enable experimental --generate-link-to-definition feature (#1327)
• Use zerocopy to replace some unsafe code (#1349)
• Support std feature without getrandom or rand_chacha (#1354)