Vendor things

third-party/vendor/rand_chacha/CHANGELOG.md

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+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [0.3.1] - 2021-06-09
+- add getters corresponding to existing setters: `get_seed`, `get_stream` (#1124)
+- add serde support, gated by the `serde1` feature (#1124)
+- ensure expected layout via `repr(transparent)` (#1120)
+
+## [0.3.0] - 2020-12-08
+- Bump `rand_core` version to 0.6.0
+- Bump MSRV to 1.36 (#1011)
+- Remove usage of deprecated feature "simd" of `ppv-lite86` (#979), then revert
+  this change (#1023) since SIMD is only enabled by default from `ppv-lite86 v0.2.10`
+- impl PartialEq+Eq for ChaChaXRng and ChaChaXCore (#979)
+- Fix panic on block counter wrap that was occurring in debug builds (#980)
+
+## [0.2.2] - 2020-03-09
+- Integrate `c2-chacha`, reducing dependency count (#931)
+- Add CryptoRng to ChaChaXCore (#944)
+
+## [0.2.1] - 2019-07-22
+- Force enable the `simd` feature of `c2-chacha` (#845)
+
+## [0.2.0] - 2019-06-06
+- Rewrite based on the much faster `c2-chacha` crate (#789)
+
+## [0.1.1] - 2019-01-04
+- Disable `i128` and `u128` if the `target_os` is `emscripten` (#671: work-around Emscripten limitation)
+- Update readme and doc links
+
+## [0.1.0] - 2018-10-17
+- Pulled out of the Rand crate