Sourced fromrand's changelog.

[0.9.0] - 2025-01-27

Security and unsafe

• Policy: "rand is not a crypto library" (#1514)
• Remove fork-protection fromReseedingRng andThreadRng. Instead, it is recommended to callThreadRng::reseed on fork. (#1379)
• Usezerocopy to replace someunsafe code (#1349,#1393,#1446,#1502)

Dependencies

• Bump the MSRV to 1.63.0 (#1207,#1246,#1269,#1341,#1416,#1536); note that 1.60.0 may work for dependents when using--ignore-rust-version
• Update torand_core v0.9.0 (#1558)

Features

• Supportstd feature withoutgetrandom orrand_chacha (#1354)
• Enable featuresmall_rng by default (#1455)
• Remove implicit featurerand_chacha; usestd_rng instead. (#1473)
• Rename featureserde1 toserde (#1477)
• Rename featuregetrandom toos_rng (#1537)
• Add featurethread_rng (#1547)

API changes: rand_core traits

• Add fnRngCore::read_adapter implementingstd::io::Read (#1267)
• Add traitCryptoBlockRng: BlockRngCore; maketrait CryptoRng: RngCore (#1273)
• Add traitsTryRngCore,TryCryptoRng (#1424,#1499)
• Renamefn SeedableRng::from_rng ->try_from_rng and add infallible variantfn from_rng (#1424)
• Renamefn SeedableRng::from_entropy ->from_os_rng and add fallible variantfn try_from_os_rng (#1424)
• Add boundsClone andAsRef to associated typeSeedableRng::Seed (#1491)

API changes: Rng trait and top-level fns

• Rename fnrand::thread_rng() torand::rng() and remove from the prelude (#1506)
• Remove fnrand::random() from the prelude (#1506)
• Add top-level fnsrandom_iter,random_range,random_bool,random_ratio,fill (#1488)
• Re-introduce fnRng::gen_iter asrandom_iter (#1305,#1500)
• Rename fnRng::gen torandom to avoid conflict with the newgen keyword in Rust 2024 (#1438)
• Rename fnsRng::gen_range torandom_range,gen_bool torandom_bool,gen_ratio torandom_ratio (#1505)
• Annotate panicking methods with#[track_caller] (#1442,#1447)

API changes: RNGs

• Fix<SmallRng as SeedableRng>::Seed size to 256 bits (#1455)
• Remove first parameter (rng) ofReseedingRng::new (#1533)

API changes: Sequences

• Split traitSliceRandom intoIndexedRandom,IndexedMutRandom,SliceRandom (#1382)
• AddIndexedRandom::choose_multiple_array,index::sample_array (#1453,#1469)

API changes: Distributions: renames

• Rename modulerand::distributions torand::distr (#1470)
• Rename distributionStandard toStandardUniform (#1526)
• Movedistr::Slice ->distr::slice::Choose,distr::EmptySlice ->distr::slice::Empty (#1548)
• Rename traitdistr::DistString ->distr::SampleString (#1548)
• Renamedistr::DistIter ->distr::Iter,distr::DistMap ->distr::Map (#1548)

... (truncated)

• 96f8df6 Prepare 0.9.0 release (#1558)
• 34da321 Enablestdarch_x86_avx512 for cpu hasavx512bw (#1551)
• b4b1eb7 Re-org with distr::slice, distr::weighted modules (#1548)
• 16eb7de Add thethread_rng feature flag (#1547)
• afa24e4 Fix test status badges (#1544)
• c681dfc Create FUNDING.yml
• 9f05e22 Update: getrandom v0.3.0 rc.0 (#1541)
• 88c310b Fix docs.rs build options (#1539)
• b879689 Adjust GH Actions (#1538)
• 3fac49f Prepare 0.9.0-beta.0 (#1535)
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