rand breaking changes

• 0.8.5 \u2192 0.9.0behavior

  Enable feature `small_rng` by default ([#1455])

• 0.8.5 \u2192 0.9.0breaking

  Use `zerocopy` to replace some `unsafe` code ([#1349], [#1393], [#1446], [#1502])

• 0.8.5 \u2192 0.9.0breaking

  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`

• 0.8.5 \u2192 0.9.0breaking

  Update to `rand_core` v0.9.0 ([#1558])

• 0.8.5 \u2192 0.9.0breaking

  Support `std` feature without `getrandom` or `rand_chacha` ([#1354])

• 0.8.5 \u2192 0.9.0breaking

  Annotate panicking methods with `#[track_caller]` ([#1442], [#1447])

• 0.8.5 \u2192 0.9.0breaking

  Add feature `thread_rng` ([#1547])

• 0.8.5 \u2192 0.9.0breaking

  Add fn `RngCore::read_adapter` implementing `std::io::Read` ([#1267])

• 0.8.5 \u2192 0.9.0breaking

  Add trait `CryptoBlockRng: BlockRngCore`; make `trait CryptoRng: RngCore` ([#1273])

• 0.8.5 \u2192 0.9.0breaking

  Add traits `TryRngCore`, `TryCryptoRng` ([#1424], [#1499])

• 0.8.5 \u2192 0.9.0breaking

  Add bounds `Clone` and `AsRef` to associated type `SeedableRng::Seed` ([#1491])

• 0.8.5 \u2192 0.9.0breaking

  Add top-level fns `random_iter`, `random_range`, `random_bool`, `random_ratio`, `fill` ([#1488])

• 0.8.5 \u2192 0.9.0breaking

  Re-introduce fn `Rng::gen_iter` as `random_iter` ([#1305], [#1500])

• 0.8.5 \u2192 0.9.0breaking

  Policy: "rand is not a crypto library" ([#1514])

• 0.8.5 \u2192 0.9.0removed

  Remove fork-protection from `ReseedingRng` and `ThreadRng`. Instead, it is recommended to call `ThreadRng::reseed` on fork. ([#1379])

• 0.8.5 \u2192 0.9.0removed

  Rename fn `rand::thread_rng()` to `rand::rng()` and remove from the prelude ([#1506])

• 0.8.5 \u2192 0.9.0removed

  Remove fn `rand::random()` from the prelude ([#1506])

• 0.8.5 \u2192 0.9.0removed

  Remove implicit feature `rand_chacha`; use `std_rng` instead. ([#1473])

• 0.8.5 \u2192 0.9.0renamed

  Rename fns `Rng::gen_range` to `random_range`, `gen_bool` to `random_bool`, `gen_ratio` to `random_ratio` ([#1505])

• 0.8.5 \u2192 0.9.0renamed

  Rename `fn SeedableRng::from_rng` -> `try_from_rng` and add infallible variant `fn from_rng` ([#1424])

• 0.8.5 \u2192 0.9.0renamed

  Rename fn `Rng::gen` to `random` to avoid conflict with the new `gen` keyword in Rust 2024 ([#1438])

• 0.8.5 \u2192 0.9.0renamed

  Rename `fn SeedableRng::from_entropy` -> `from_os_rng` and add fallible variant `fn try_from_os_rng` ([#1424])

• 0.8.5 \u2192 0.9.0renamed

  Rename feature `serde1` to `serde` ([#1477])

• 0.8.5 \u2192 0.9.0renamed

  Rename feature `getrandom` to `os_rng` ([#1537])

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