Remove wasm-bindgen and stdweb feature flags. For details of WASM support,
see the getrandom documentation. (#948)
ReadRng::next_u32 and next_u64 now use little-Endian conversion instead
of native-Endian, affecting results on Big-Endian platforms (#1061)
The nightly feature no longer implies the simd_support feature (#1048)
Fix simd_support feature to work on current nightlies (#1056)
Rngs
ThreadRng is no longer Copy to enable safe usage within thread-local destructors (#1035)
gen_range(a, b) was replaced with gen_range(a..b). gen_range(a..=b) is
also supported. Note that a and b can no longer be references or SIMD types. (#744, #1003)
Replace AsByteSliceMut with Fill and add support for [bool], [char], [f32], [f64] (#940)
Restrict rand::rngs::adapter to std (#1027; see also #928)
StdRng: add new std_rng feature flag (enabled by default, but might need
to be used if disabling default crate features) (#948)
StdRng: Switch from ChaCha20 to ChaCha12 for better performance (#1028)
SmallRng: Replace PCG algorithm with xoshiro{128,256}++ (#1038)
Sequences
Add IteratorRandom::choose_stable as an alternative to choose which does
not depend on size hints (#1057)
Improve accuracy and performance of IteratorRandom::choose (#1059)
Implement IntoIterator for IndexVec, replacing the into_iter method (#1007)
Implement weighted sampling without replacement (#976, #1013)
rand::distributions::alias_method::WeightedIndex was moved to rand_distr::WeightedAliasIndex.
The simpler alternative rand::distribution::WeightedIndex remains. (#945)
Improve treatment of rounding errors in WeightedIndex::update_weights (#956)
WeightedIndex: return error on NaN instead of panic (#1005)
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