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Sourced from rand's changelog.

[0.9.1] - 2025-04-17

Security and unsafe

• Revise "not a crypto library" policy again (#1565)
• Remove zerocopy dependency from rand (#1579)

Fixes

• Fix feature simd_support for recent nightly rust (#1586)

Changes

• Allow fn rand::seq::index::sample_weighted and fn IndexedRandom::choose_multiple_weighted to return fewer than amount results (#1623), reverting an undocumented change (#1382) to the previous release.

Additions

• Add rand::distr::Alphabetic distribution. (#1587)
• Re-export rand_core (#1604)

[0.9.0] - 2025-01-27

Security and unsafe

• Policy: "rand is not a crypto library" (#1514)
• Remove fork-protection from ReseedingRng and ThreadRng. Instead, it is recommended to call ThreadRng::reseed on fork. (#1379)
• Use zerocopy to replace some unsafe 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 to rand_core v0.9.0 (#1558)

Features

• Support std feature without getrandom or rand_chacha (#1354)
• Enable feature small_rng by default (#1455)
• Remove implicit feature rand_chacha; use std_rng instead. (#1473)
• Rename feature serde1 to serde (#1477)
• Rename feature getrandom to os_rng (#1537)
• Add feature thread_rng (#1547)

API changes: rand_core traits

• Add fn RngCore::read_adapter implementing std::io::Read (#1267)
• Add trait CryptoBlockRng: BlockRngCore; make trait CryptoRng: RngCore (#1273)
• Add traits TryRngCore, TryCryptoRng (#1424, #1499)
• Rename fn SeedableRng::from_rng -> try_from_rng and add infallible variant fn from_rng (#1424)
• Rename fn SeedableRng::from_entropy -> from_os_rng and add fallible variant fn try_from_os_rng (#1424)
• Add bounds Clone and AsRef to associated type SeedableRng::Seed (#1491)

API changes: Rng trait and top-level fns

• Rename fn rand::thread_rng() to rand::rng() and remove from the prelude (#1506)
• Remove fn rand::random() from the prelude (#1506)
• Add top-level fns random_iter, random_range, random_bool, random_ratio, fill (#1488)
• Re-introduce fn Rng::gen_iter as random_iter (#1305, #1500)
• Rename fn Rng::gen to random to avoid conflict with the new gen keyword in Rust 2024 (#1438)
• Rename fns Rng::gen_range to random_range, gen_bool to random_bool, gen_ratio to random_ratio (#1505)
• Annotate panicking methods with #[track_caller] (#1442, #1447)

... (truncated)

• ec6d5c0 Prepare rand_core v0.9.1 (#1591)
• 6a06056 rand_core: introduce an UnwrapMut wrapper (#1589)
• 8929123 Add Alphabetic distribution (#1587)
• 06b1642 Remove unnecessary underscore from `impl<T, const N: usize> Distribution<[T; ...
• 49d76cd rename extract to extract_lane (#1586)
• e0a70fd Change to use array::from_fn in Distribution\<[T; N]> for StandardUniform ...
• 0bc3f65 Move rand distr (#1577)
• 2677c49 Revise "not a crypto library" policy and SECURITY.md (#1565)
• bfd1826 SeedableRng docs: add note on (lack of) reproducibility (#1572)
• c01aee7 Fix some links (#1571)
• Additional commits viewable in compare view

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