vendor/rand/CHANGELOG.md

   1 # Changelog
   2 All notable changes to this project will be documented in this file.
   3
   4 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
   5 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
   6
   7 A [separate changelog is kept for rand_core](rand_core/CHANGELOG.md).
   8
   9 You may also find the [Upgrade Guide](https://rust-random.github.io/book/update.html) useful.
  10
  11 ## [0.8.3] - 2021-01-25
  12 ### Fixes
  13 - Fix `no-std` + `alloc` build by gating `choose_multiple_weighted` on `std` (#1088)
  14
  15 ## [0.8.2] - 2021-01-12
  16 ### Fixes
  17 - Fix panic in `UniformInt::sample_single_inclusive` and `Rng::gen_range` when
  18   providing a full integer range (eg `0..=MAX`) (#1087)
  19
  20 ## [0.8.1] - 2020-12-31
  21 ### Other
  22 - Enable all stable features in the playground (#1081)
  23
  24 ## [0.8.0] - 2020-12-18
  25 ### Platform support
  26 - The minimum supported Rust version is now 1.36 (#1011)
  27 - `getrandom` updated to v0.2 (#1041)
  28 - Remove `wasm-bindgen` and `stdweb` feature flags. For details of WASM support,
  29   see the [getrandom documentation](https://docs.rs/getrandom/latest). (#948)
  30 - `ReadRng::next_u32` and `next_u64` now use little-Endian conversion instead
  31   of native-Endian, affecting results on Big-Endian platforms (#1061)
  32 - The `nightly` feature no longer implies the `simd_support` feature (#1048)
  33 - Fix `simd_support` feature to work on current nightlies (#1056)
  34
  35 ### Rngs
  36 - `ThreadRng` is no longer `Copy` to enable safe usage within thread-local destructors (#1035)
  37 - `gen_range(a, b)` was replaced with `gen_range(a..b)`. `gen_range(a..=b)` is
  38   also supported. Note that `a` and `b` can no longer be references or SIMD types. (#744, #1003)
  39 - Replace `AsByteSliceMut` with `Fill` and add support for `[bool], [char], [f32], [f64]` (#940)
  40 - Restrict `rand::rngs::adapter` to `std` (#1027; see also #928)
  41 - `StdRng`: add new `std_rng` feature flag (enabled by default, but might need
  42   to be used if disabling default crate features) (#948)
  43 - `StdRng`: Switch from ChaCha20 to ChaCha12 for better performance (#1028)
  44 - `SmallRng`: Replace PCG algorithm with xoshiro{128,256}++ (#1038)
  45
  46 ### Sequences
  47 - Add `IteratorRandom::choose_stable` as an alternative to `choose` which does
  48   not depend on size hints (#1057)
  49 - Improve accuracy and performance of `IteratorRandom::choose` (#1059)
  50 - Implement `IntoIterator` for `IndexVec`, replacing the `into_iter` method (#1007)
  51 - Add value stability tests for `seq` module (#933)
  52
  53 ### Misc
  54 - Support `PartialEq` and `Eq` for `StdRng`, `SmallRng` and `StepRng` (#979)
  55 - Added a `serde1` feature and added Serialize/Deserialize to `UniformInt` and `WeightedIndex` (#974)
  56 - Drop some unsafe code (#962, #963, #1011)
  57 - Reduce packaged crate size (#983)
  58 - Migrate to GitHub Actions from Travis+AppVeyor (#1073)
  59
  60 ### Distributions
  61 - `Alphanumeric` samples bytes instead of chars (#935)
  62 - `Uniform` now supports `char`, enabling `rng.gen_range('A'..='Z')` (#1068)
  63 - Add `UniformSampler::sample_single_inclusive` (#1003)
  64
  65 #### Weighted sampling
  66 - Implement weighted sampling without replacement (#976, #1013)
  67 - `rand::distributions::alias_method::WeightedIndex` was moved to `rand_distr::WeightedAliasIndex`.
  68   The simpler alternative `rand::distribution::WeightedIndex` remains. (#945)
  69 - Improve treatment of rounding errors in `WeightedIndex::update_weights` (#956)
  70 - `WeightedIndex`: return error on NaN instead of panic (#1005)
  71
  72 ### Documentation
  73 - Document types supported by `random` (#994)
  74 - Document notes on password generation (#995)
  75 - Note that `SmallRng` may not be the best choice for performance and in some
  76   other cases (#1038)
  77 - Use `doc(cfg)` to annotate feature-gated items (#1019)
  78 - Adjust README (#1065)
  79
  80 ## [0.7.3] - 2020-01-10
  81 ### Fixes
  82 - The `Bernoulli` distribution constructors now reports an error on NaN and on
  83   `denominator == 0`. (#925)
  84 - Use `std::sync::Once` to register fork handler, avoiding possible atomicity violation (#928)
  85 - Fix documentation on the precision of generated floating-point values
  86
  87 ### Changes
  88 - Unix: make libc dependency optional; only use fork protection with std feature (#928)
  89
  90 ### Additions
  91 - Implement `std::error::Error` for `BernoulliError` (#919)
  92
  93 ## [0.7.2] - 2019-09-16
  94 ### Fixes
  95 - Fix dependency on `rand_core` 0.5.1 (#890)
  96
  97 ### Additions
  98 - Unit tests for value stability of distributions added (#888)
  99
 100 ## [0.7.1] - 2019-09-13
 101 ### Yanked
 102 This release was yanked since it depends on `rand_core::OsRng` added in 0.5.1
 103 but specifies a dependency on version 0.5.0 (#890), causing a broken builds
 104 when updating from `rand 0.7.0` without also updating `rand_core`.
 105
 106 ### Fixes
 107 - Fix `no_std` behaviour, appropriately enable c2-chacha's `std` feature (#844)
 108 - `alloc` feature in `no_std` is available since Rust 1.36 (#856)
 109 - Fix or squelch issues from Clippy lints (#840)
 110
 111 ### Additions
 112 - Add a `no_std` target to CI to continuously evaluate `no_std` status (#844)
 113 - `WeightedIndex`: allow adjusting a sub-set of weights (#866)
 114
 115 ## [0.7.0] - 2019-06-28
 116
 117 ### Fixes
 118 - Fix incorrect pointer usages revealed by Miri testing (#780, #781)
 119 - Fix (tiny!) bias in `Uniform` for 8- and 16-bit ints (#809)
 120
 121 ### Crate
 122 - Bumped MSRV (min supported Rust version) to 1.32.0
 123 - Updated to Rust Edition 2018  (#823, #824)
 124 - Removed dependence on `rand_xorshift`, `rand_isaac`, `rand_jitter` crates (#759, #765)
 125 - Remove dependency on `winapi` (#724)
 126 - Removed all `build.rs` files (#824)
 127 - Removed code already deprecated in version 0.6 (#757)
 128 - Removed the serde1 feature (It's still available for backwards compatibility, but it does not do anything. #830)
 129 - Many documentation changes
 130
 131 ### rand_core
 132 - Updated to `rand_core` 0.5.0
 133 - `Error` type redesigned with new API (#800)
 134 - Move `from_entropy` method to `SeedableRng` and remove `FromEntropy` (#800)
 135 - `SeedableRng::from_rng` is now expected to be value-stable (#815)
 136
 137 ### Standard RNGs
 138 - OS interface moved from `rand_os` to new `getrandom` crate (#765, [getrandom](https://github.com/rust-random/getrandom))
 139 - Use ChaCha for `StdRng` and `ThreadRng` (#792)
 140 - Feature-gate `SmallRng` (#792)
 141 - `ThreadRng` now supports `Copy` (#758)
 142 - Deprecated `EntropyRng` (#765)
 143 - Enable fork protection of ReseedingRng without `std` (#724)
 144
 145 ### Distributions
 146 - Many distributions have been moved to `rand_distr` (#761)
 147 - `Bernoulli::new` constructor now returns a `Result` (#803)
 148 - `Distribution::sample_iter` adjusted for more flexibility (#758)
 149 - Added `distributions::weighted::alias_method::WeightedIndex` for `O(1)` sampling (#692)
 150 - Support sampling `NonZeroU*` types with the `Standard` distribution (#728)
 151 - Optimised `Binomial` distribution sampling (#735, #740, #752)
 152 - Optimised SIMD float sampling (#739)
 153
 154 ### Sequences
 155 - Make results portable across 32- and 64-bit by using `u32` samples for `usize` where possible (#809)
 156
 157 ## [0.6.5] - 2019-01-28
 158 ### Crates
 159 - Update `rand_core` to 0.4 (#703)
 160 - Move `JitterRng` to its own crate (#685)
 161 - Add a wasm-bindgen test crate (#696)
 162
 163 ### Platforms
 164 - Fuchsia: Replaced fuchsia-zircon with fuchsia-cprng
 165
 166 ### Doc
 167 - Use RFC 1946 for doc links (#691)
 168 - Fix some doc links and notes (#711)
 169
 170 ## [0.6.4] - 2019-01-08
 171 ### Fixes
 172 - Move wasm-bindgen shims to correct crate (#686)
 173 - Make `wasm32-unknown-unknown` compile but fail at run-time if missing bindingsg (#686)
 174
 175 ## [0.6.3] - 2019-01-04
 176 ### Fixes
 177 - Make the `std` feature require the optional `rand_os` dependency (#675)
 178 - Re-export the optional WASM dependencies of `rand_os` from `rand` to avoid breakage (#674)
 179
 180 ## [0.6.2] - 2019-01-04
 181 ### Additions
 182 - Add `Default` for `ThreadRng` (#657)
 183 - Move `rngs::OsRng` to `rand_os` sub-crate; clean up code; use as dependency (#643) ##BLOCKER##
 184 - Add `rand_xoshiro` sub-crate, plus benchmarks (#642, #668)
 185
 186 ### Fixes
 187 - Fix bias in `UniformInt::sample_single` (#662)
 188 - Use `autocfg` instead of `rustc_version` for rustc version detection (#664)
 189 - Disable `i128` and `u128` if the `target_os` is `emscripten` (#671: work-around Emscripten limitation)
 190 - CI fixes (#660, #671)
 191
 192 ### Optimisations
 193 - Optimise memory usage of `UnitCircle` and `UnitSphereSurface` distributions (no PR)
 194
 195 ## [0.6.1] - 2018-11-22
 196 - Support sampling `Duration` also for `no_std` (only since Rust 1.25) (#649)
 197 - Disable default features of `libc` (#647)
 198
 199 ## [0.6.0] - 2018-11-14
 200
 201 ### Project organisation
 202 - Rand has moved from [rust-lang-nursery](https://github.com/rust-lang-nursery/rand)
 203   to [rust-random](https://github.com/rust-random/rand)! (#578)
 204 - Created [The Rust Random Book](https://rust-random.github.io/book/)
 205   ([source](https://github.com/rust-random/book))
 206 - Update copyright and licence notices (#591, #611)
 207 - Migrate policy documentation from the wiki (#544)
 208
 209 ### Platforms
 210 - Add fork protection on Unix (#466)
 211 - Added support for wasm-bindgen. (#541, #559, #562, #600)
 212 - Enable `OsRng` for powerpc64, sparc and sparc64 (#609)
 213 - Use `syscall` from `libc` on Linux instead of redefining it (#629)
 214
 215 ### RNGs
 216 - Switch `SmallRng` to use PCG (#623)
 217 - Implement `Pcg32` and `Pcg64Mcg` generators (#632)
 218 - Move ISAAC RNGs to a dedicated crate (#551)
 219 - Move Xorshift RNG to its own crate (#557)
 220 - Move ChaCha and HC128 RNGs to dedicated crates (#607, #636)
 221 - Remove usage of `Rc` from `ThreadRng` (#615)
 222
 223 ### Sampling and distributions
 224 - Implement `Rng.gen_ratio()` and `Bernoulli::new_ratio()` (#491)
 225 - Make `Uniform` strictly respect `f32` / `f64` high/low bounds (#477)
 226 - Allow `gen_range` and `Uniform` to work on non-`Copy` types (#506)
 227 - `Uniform` supports inclusive ranges: `Uniform::from(a..=b)`. This is
 228   automatically enabled for Rust >= 1.27. (#566)
 229 - Implement `TrustedLen` and `FusedIterator` for `DistIter` (#620)
 230
 231 #### New distributions
 232 - Add the `Dirichlet` distribution (#485)
 233 - Added sampling from the unit sphere and circle. (#567)
 234 - Implement the triangular distribution (#575)
 235 - Implement the Weibull distribution (#576)
 236 - Implement the Beta distribution (#574)
 237
 238 #### Optimisations
 239
 240 - Optimise `Bernoulli::new` (#500)
 241 - Optimise `char` sampling (#519)
 242 - Optimise sampling of `std::time::Duration` (#583)
 243
 244 ### Sequences
 245 - Redesign the `seq` module (#483, #515)
 246 - Add `WeightedIndex` and `choose_weighted` (#518, #547)
 247 - Optimised and changed return type of the `sample_indices` function. (#479)
 248 - Use `Iterator::size_hint()` to speed up `IteratorRandom::choose` (#593)
 249
 250 ### SIMD
 251 - Support for generating SIMD types (#523, #542, #561, #630)
 252
 253 ### Other
 254 - Revise CI scripts (#632, #635)
 255 - Remove functionality already deprecated in 0.5 (#499)
 256 - Support for `i128` and `u128` is automatically enabled for Rust >= 1.26. This
 257   renders the `i128_support` feature obsolete. It still exists for backwards
 258   compatibility but does not have any effect. This breaks programs using Rand
 259   with `i128_support` on nightlies older than Rust 1.26. (#571)
 260
 261
 262 ## [0.5.5] - 2018-08-07
 263 ### Documentation
 264 - Fix links in documentation (#582)
 265
 266
 267 ## [0.5.4] - 2018-07-11
 268 ### Platform support
 269 - Make `OsRng` work via WASM/stdweb for WebWorkers
 270
 271
 272 ## [0.5.3] - 2018-06-26
 273 ### Platform support
 274 - OpenBSD, Bitrig: fix compilation (broken in 0.5.1) (#530)
 275
 276
 277 ## [0.5.2] - 2018-06-18
 278 ### Platform support
 279 - Hide `OsRng` and `JitterRng` on unsupported platforms (#512; fixes #503).
 280
 281
 282 ## [0.5.1] - 2018-06-08
 283
 284 ### New distributions
 285 - Added Cauchy distribution. (#474, #486)
 286 - Added Pareto distribution. (#495)
 287
 288 ### Platform support and `OsRng`
 289 - Remove blanket Unix implementation. (#484)
 290 - Remove Wasm unimplemented stub. (#484)
 291 - Dragonfly BSD: read from `/dev/random`. (#484)
 292 - Bitrig: use `getentropy` like OpenBSD. (#484)
 293 - Solaris: (untested) use `getrandom` if available, otherwise `/dev/random`. (#484)
 294 - Emscripten, `stdweb`: split the read up in chunks. (#484)
 295 - Emscripten, Haiku: don't do an extra blocking read from `/dev/random`. (#484)
 296 - Linux, NetBSD, Solaris: read in blocking mode on first use in `fill_bytes`. (#484)
 297 - Fuchsia, CloudABI: fix compilation (broken in Rand 0.5). (#484)
 298
 299
 300 ## [0.5.0] - 2018-05-21
 301
 302 ### Crate features and organisation
 303 - Minimum Rust version update: 1.22.0. (#239)
 304 - Create a separate `rand_core` crate. (#288)
 305 - Deprecate `rand_derive`. (#256)
 306 - Add `prelude` (and module reorganisation). (#435)
 307 - Add `log` feature. Logging is now available in `JitterRng`, `OsRng`, `EntropyRng` and `ReseedingRng`. (#246)
 308 - Add `serde1` feature for some PRNGs. (#189)
 309 - `stdweb` feature for `OsRng` support on WASM via stdweb. (#272, #336)
 310
 311 ### `Rng` trait
 312 - Split `Rng` in `RngCore` and `Rng` extension trait.
 313   `next_u32`, `next_u64` and `fill_bytes` are now part of `RngCore`. (#265)
 314 - Add `Rng::sample`. (#256)
 315 - Deprecate `Rng::gen_weighted_bool`. (#308)
 316 - Add `Rng::gen_bool`. (#308)
 317 - Remove `Rng::next_f32` and `Rng::next_f64`. (#273)
 318 - Add optimized `Rng::fill` and `Rng::try_fill` methods. (#247)
 319 - Deprecate `Rng::gen_iter`. (#286)
 320 - Deprecate `Rng::gen_ascii_chars`. (#279)
 321
 322 ### `rand_core` crate
 323 - `rand` now depends on new `rand_core` crate (#288)
 324 - `RngCore` and `SeedableRng` are now part of `rand_core`. (#288)
 325 - Add modules to help implementing RNGs `impl` and `le`. (#209, #228)
 326 - Add `Error` and `ErrorKind`. (#225)
 327 - Add `CryptoRng` marker trait. (#273)
 328 - Add `BlockRngCore` trait. (#281)
 329 - Add `BlockRng` and `BlockRng64` wrappers to help implementations. (#281, #325)
 330 - Revise the `SeedableRng` trait. (#233)
 331 - Remove default implementations for `RngCore::next_u64` and `RngCore::fill_bytes`. (#288)
 332 - Add `RngCore::try_fill_bytes`. (#225)
 333
 334 ### Other traits and types
 335 - Add `FromEntropy` trait. (#233, #375)
 336 - Add `SmallRng` wrapper. (#296)
 337 - Rewrite `ReseedingRng` to only work with `BlockRngCore` (substantial performance improvement). (#281)
 338 - Deprecate `weak_rng`. Use `SmallRng` instead. (#296)
 339 - Deprecate `AsciiGenerator`. (#279)
 340
 341 ### Random number generators
 342 - Switch `StdRng` and `thread_rng` to HC-128. (#277)
 343 - `StdRng` must now be created with `from_entropy` instead of `new`
 344 - Change `thread_rng` reseeding threshold to 32 MiB. (#277)
 345 - PRNGs no longer implement `Copy`. (#209)
 346 - `Debug` implementations no longer show internals. (#209)
 347 - Implement `Clone` for `ReseedingRng`, `JitterRng`, OsRng`. (#383, #384)
 348 - Implement serialization for `XorShiftRng`, `IsaacRng` and `Isaac64Rng` under the `serde1` feature. (#189)
 349 - Implement `BlockRngCore` for `ChaChaCore` and `Hc128Core`. (#281)
 350 - All PRNGs are now portable across big- and little-endian architectures. (#209)
 351 - `Isaac64Rng::next_u32` no longer throws away half the results. (#209)
 352 - Add `IsaacRng::new_from_u64` and `Isaac64Rng::new_from_u64`. (#209)
 353 - Add the HC-128 CSPRNG `Hc128Rng`. (#210)
 354 - Change ChaCha20 to have 64-bit counter and 64-bit stream. (#349)
 355 - Changes to `JitterRng` to get its size down from 2112 to 24 bytes. (#251)
 356 - Various performance improvements to all PRNGs.
 357
 358 ### Platform support and `OsRng`
 359 - Add support for CloudABI. (#224)
 360 - Remove support for NaCl. (#225)
 361 - WASM support for `OsRng` via stdweb, behind the `stdweb` feature. (#272, #336)
 362 - Use `getrandom` on more platforms for Linux, and on Android. (#338)
 363 - Use the `SecRandomCopyBytes` interface on macOS. (#322)
 364 - On systems that do not have a syscall interface, only keep a single file descriptor open for `OsRng`. (#239)
 365 - On Unix, first try a single read from `/dev/random`, then `/dev/urandom`. (#338)
 366 - Better error handling and reporting in `OsRng` (using new error type). (#225)
 367 - `OsRng` now uses non-blocking when available. (#225)
 368 - Add `EntropyRng`, which provides `OsRng`, but has `JitterRng` as a fallback. (#235)
 369
 370 ### Distributions
 371 - New `Distribution` trait. (#256)
 372 - Add `Distribution::sample_iter` and `Rng::::sample_iter`. (#361)
 373 - Deprecate `Rand`, `Sample` and `IndependentSample` traits. (#256)
 374 - Add a `Standard` distribution (replaces most `Rand` implementations). (#256)
 375 - Add `Binomial` and `Poisson` distributions. (#96)
 376 - Add `Bernoulli` dsitribution. (#411)
 377 - Add `Alphanumeric` distribution. (#279)
 378 - Remove `Closed01` distribution, add `OpenClosed01`. (#274, #420)
 379 - Rework `Range` type, making it possible to implement it for user types. (#274)
 380 - Rename `Range` to `Uniform`. (#395)
 381 - Add `Uniform::new_inclusive` for inclusive ranges. (#274)
 382 - Use widening multiply method for much faster integer range reduction. (#274)
 383 - `Standard` distribution for `char` uses `Uniform` internally. (#274)
 384 - `Standard` distribution for `bool` uses sign test. (#274)
 385 - Implement `Standard` distribution for `Wrapping<T>`. (#436)
 386 - Implement `Uniform` distribution for `Duration`. (#427)
 387
 388
 389 ## [0.4.3] - 2018-08-16
 390 ### Fixed
 391 - Use correct syscall number for PowerPC (#589)
 392
 393
 394 ## [0.4.2] - 2018-01-06
 395 ### Changed
 396 - Use `winapi` on Windows
 397 - Update for Fuchsia OS
 398 - Remove dev-dependency on `log`
 399
 400
 401 ## [0.4.1] - 2017-12-17
 402 ### Added
 403 - `no_std` support
 404
 405
 406 ## [0.4.0-pre.0] - 2017-12-11
 407 ### Added
 408 - `JitterRng` added as a high-quality alternative entropy source using the
 409   system timer
 410 - new `seq` module with `sample_iter`, `sample_slice`, etc.
 411 - WASM support via dummy implementations (fail at run-time)
 412 - Additional benchmarks, covering generators and new seq code
 413
 414 ### Changed
 415 - `thread_rng` uses `JitterRng` if seeding from system time fails
 416   (slower but more secure than previous method)
 417
 418 ### Deprecated
 419   - `sample` function deprecated (replaced by `sample_iter`)
 420
 421
 422 ## [0.3.20] - 2018-01-06
 423 ### Changed
 424 - Remove dev-dependency on `log`
 425 - Update `fuchsia-zircon` dependency to 0.3.2
 426
 427
 428 ## [0.3.19] - 2017-12-27
 429 ### Changed
 430 - Require `log <= 0.3.8` for dev builds
 431 - Update `fuchsia-zircon` dependency to 0.3
 432 - Fix broken links in docs (to unblock compiler docs testing CI)
 433
 434
 435 ## [0.3.18] - 2017-11-06
 436 ### Changed
 437 - `thread_rng` is seeded from the system time if `OsRng` fails
 438 - `weak_rng` now uses `thread_rng` internally
 439
 440
 441 ## [0.3.17] - 2017-10-07
 442 ### Changed
 443  - Fuchsia: Magenta was renamed Zircon
 444
 445 ## [0.3.16] - 2017-07-27
 446 ### Added
 447 - Implement Debug for mote non-public types
 448 - implement `Rand` for (i|u)i128
 449 - Support for Fuchsia
 450
 451 ### Changed
 452 - Add inline attribute to SampleRange::construct_range.
 453   This improves the benchmark for sample in 11% and for shuffle in 16%.
 454 - Use `RtlGenRandom` instead of `CryptGenRandom`
 455
 456
 457 ## [0.3.15] - 2016-11-26
 458 ### Added
 459 - Add `Rng` trait method `choose_mut`
 460 - Redox support
 461
 462 ### Changed
 463 - Use `arc4rand` for `OsRng` on FreeBSD.
 464 - Use `arc4random(3)` for `OsRng` on OpenBSD.
 465
 466 ### Fixed
 467 - Fix filling buffers 4 GiB or larger with `OsRng::fill_bytes` on Windows
 468
 469
 470 ## [0.3.14] - 2016-02-13
 471 ### Fixed
 472 - Inline definitions from winapi/advapi32, which decreases build times
 473
 474
 475 ## [0.3.13] - 2016-01-09
 476 ### Fixed
 477 - Compatible with Rust 1.7.0-nightly (needed some extra type annotations)
 478
 479
 480 ## [0.3.12] - 2015-11-09
 481 ### Changed
 482 - Replaced the methods in `next_f32` and `next_f64` with the technique described
 483   Saito & Matsumoto at MCQMC'08. The new method should exhibit a slightly more
 484   uniform distribution.
 485 - Depend on libc 0.2
 486
 487 ### Fixed
 488 - Fix iterator protocol issue in `rand::sample`
 489
 490
 491 ## [0.3.11] - 2015-08-31
 492 ### Added
 493 - Implement `Rand` for arrays with n <= 32
 494
 495
 496 ## [0.3.10] - 2015-08-17
 497 ### Added
 498 - Support for NaCl platforms
 499
 500 ### Changed
 501 - Allow `Rng` to be `?Sized`, impl for `&mut R` and `Box<R>` where `R: ?Sized + Rng`
 502
 503
 504 ## [0.3.9] - 2015-06-18
 505 ### Changed
 506 - Use `winapi` for Windows API things
 507
 508 ### Fixed
 509 - Fixed test on stable/nightly
 510 - Fix `getrandom` syscall number for aarch64-unknown-linux-gnu
 511
 512
 513 ## [0.3.8] - 2015-04-23
 514 ### Changed
 515 - `log` is a dev dependency
 516
 517 ### Fixed
 518 - Fix race condition of atomics in `is_getrandom_available`
 519
 520
 521 ## [0.3.7] - 2015-04-03
 522 ### Fixed
 523 - Derive Copy/Clone changes
 524
 525
 526 ## [0.3.6] - 2015-04-02
 527 ### Changed
 528 - Move to stable Rust!
 529
 530
 531 ## [0.3.5] - 2015-04-01
 532 ### Fixed
 533 - Compatible with Rust master
 534
 535
 536 ## [0.3.4] - 2015-03-31
 537 ### Added
 538 - Implement Clone for `Weighted`
 539
 540 ### Fixed
 541 - Compatible with Rust master
 542
 543
 544 ## [0.3.3] - 2015-03-26
 545 ### Fixed
 546 - Fix compile on Windows
 547
 548
 549 ## [0.3.2] - 2015-03-26
 550
 551
 552 ## [0.3.1] - 2015-03-26
 553 ### Fixed
 554 - Fix compile on Windows
 555
 556
 557 ## [0.3.0] - 2015-03-25
 558 ### Changed
 559 - Update to use log version 0.3.x
 560
 561
 562 ## [0.2.1] - 2015-03-22
 563 ### Fixed
 564 - Compatible with Rust master
 565 - Fixed iOS compilation
 566
 567
 568 ## [0.2.0] - 2015-03-06
 569 ### Fixed
 570 - Compatible with Rust master (move from `old_io` to `std::io`)
 571
 572
 573 ## [0.1.4] - 2015-03-04
 574 ### Fixed
 575 - Compatible with Rust master (use wrapping ops)
 576
 577
 578 ## [0.1.3] - 2015-02-20
 579 ### Fixed
 580 - Compatible with Rust master
 581
 582 ### Removed
 583 - Removed Copy implementations from RNGs
 584
 585
 586 ## [0.1.2] - 2015-02-03
 587 ### Added
 588 - Imported functionality from `std::rand`, including:
 589   - `StdRng`, `SeedableRng`, `TreadRng`, `weak_rng()`
 590   - `ReaderRng`: A wrapper around any Reader to treat it as an RNG.
 591 - Imported documentation from `std::rand`
 592 - Imported tests from `std::rand`
 593
 594
 595 ## [0.1.1] - 2015-02-03
 596 ### Added
 597 - Migrate to a cargo-compatible directory structure.
 598
 599 ### Fixed
 600 - Do not use entropy during `gen_weighted_bool(1)`
 601
 602
 603 ## [Rust 0.12.0] - 2014-10-09
 604 ### Added
 605 - Impl Rand for tuples of arity 11 and 12
 606 - Include ChaCha pseudorandom generator
 607 - Add `next_f64` and `next_f32` to Rng
 608 - Implement Clone for PRNGs
 609
 610 ### Changed
 611 - Rename `TaskRng` to `ThreadRng` and `task_rng` to `thread_rng` (since a
 612   runtime is removed from Rust).
 613
 614 ### Fixed
 615 - Improved performance of ISAAC and ISAAC64 by 30% and 12 % respectively, by
 616   informing the optimiser that indexing is never out-of-bounds.
 617
 618 ### Removed
 619 - Removed the Deprecated `choose_option`
 620
 621
 622 ## [Rust 0.11.0] - 2014-07-02
 623 ### Added
 624 - document when to use `OSRng` in cryptographic context, and explain why we use `/dev/urandom` instead of `/dev/random`
 625 - `Rng::gen_iter()` which will return an infinite stream of random values
 626 - `Rng::gen_ascii_chars()` which will return an infinite stream of random ascii characters
 627
 628 ### Changed
 629 - Now only depends on libcore!
 630 - Remove `Rng.choose()`, rename `Rng.choose_option()` to `.choose()`
 631 - Rename OSRng to OsRng
 632 - The WeightedChoice structure is no longer built with a `Vec<Weighted<T>>`,
 633   but rather a `&mut [Weighted<T>]`. This means that the WeightedChoice
 634   structure now has a lifetime associated with it.
 635 - The `sample` method on `Rng` has been moved to a top-level function in the
 636   `rand` module due to its dependence on `Vec`.
 637
 638 ### Removed
 639 - `Rng::gen_vec()` was removed. Previous behavior can be regained with
 640   `rng.gen_iter().take(n).collect()`
 641 - `Rng::gen_ascii_str()` was removed. Previous behavior can be regained with
 642   `rng.gen_ascii_chars().take(n).collect()`
 643 - {IsaacRng, Isaac64Rng, XorShiftRng}::new() have all been removed. These all
 644   relied on being able to use an OSRng for seeding, but this is no longer
 645   available in librand (where these types are defined). To retain the same
 646   functionality, these types now implement the `Rand` trait so they can be
 647   generated with a random seed from another random number generator. This allows
 648   the stdlib to use an OSRng to create seeded instances of these RNGs.
 649 - Rand implementations for `Box<T>` and `@T` were removed. These seemed to be
 650   pretty rare in the codebase, and it allows for librand to not depend on
 651   liballoc.  Additionally, other pointer types like Rc<T> and Arc<T> were not
 652   supported.
 653 - Remove a slew of old deprecated functions
 654
 655
 656 ## [Rust 0.10] - 2014-04-03
 657 ### Changed
 658 - replace `Rng.shuffle's` functionality with `.shuffle_mut`
 659 - bubble up IO errors when creating an OSRng
 660
 661 ### Fixed
 662 - Use `fill()` instead of `read()`
 663 - Rewrite OsRng in Rust for windows
 664
 665 ## [0.10-pre] - 2014-03-02
 666 ### Added
 667 - Seperate `rand` out of the standard library