Merge #343 #344

343: Bump arrayvec from 0.4.9 to 0.4.10 r=matklad a=dependabot[bot]

Bumps [arrayvec](https://github.com/bluss/arrayvec) from 0.4.9 to 0.4.10.
<details>
<summary>Commits</summary>

- [`21661fa`](https://github.com/bluss/arrayvec/commit/21661facf8f5d65b4bd6701e48d218eb957314fa) 0.4.10
- [`06930d2`](https://github.com/bluss/arrayvec/commit/06930d27ce8e292755754b1e09901fb36cd46919) FIX: Remove unused Copy/Clone for MaybeUninit
- [`85d9a06`](https://github.com/bluss/arrayvec/commit/85d9a06a62d73776b2fe7786e2d50e2833384331) FIX: Use repr(C) MaybeUninit after discussion with RalfJung
- See full diff in [compare view](https://github.com/bluss/arrayvec/compare/0.4.9...0.4.10)
</details>
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344: Bump itertools from 0.7.11 to 0.8.0 r=matklad a=dependabot[bot]

Bumps [itertools](https://github.com/bluss/rust-itertools) from 0.7.11 to 0.8.0.
<details>
<summary>Commits</summary>

- [`cd0602a`](https://github.com/bluss/rust-itertools/commit/cd0602addc43bfb0d2335e5c0034a89bcbb0f326) 0.8.0
- [`5a8f2fd`](https://github.com/bluss/rust-itertools/commit/5a8f2fd5edbc62eea8a877180eaec171f05f66d3) MAINT: Require Rust 1.24 as minimum version
- [`4986d92`](https://github.com/bluss/rust-itertools/commit/4986d92d7f6fb128afe8c9228ccdb443f4bc1537) DOC: Minor edits to module docs
- [`01f15a0`](https://github.com/bluss/rust-itertools/commit/01f15a0910e3c843df15958f5b0296708286d4ee) Merge [#288](https://github-redirect.dependabot.com/bluss/rust-itertools/issues/288)
- [`883d40a`](https://github.com/bluss/rust-itertools/commit/883d40a6efcf0451dab0a9cd006ab7de18be8de2) map_into method
- [`3bf265d`](https://github.com/bluss/rust-itertools/commit/3bf265d5b7e991b63b174b2e091659e8ee54b4c4) Merge pull request [#321](https://github-redirect.dependabot.com/bluss/rust-itertools/issues/321) from JohnHeitmann/master
- [`e820996`](https://github.com/bluss/rust-itertools/commit/e820996f6409c5615c9dd61d1865e48a7a2ad520) Document the trait extension behavior of Itertools a bit more clearly
- [`44c9654`](https://github.com/bluss/rust-itertools/commit/44c9654fdb3653389ddd57048363808de9737381) Merge pull request [#318](https://github-redirect.dependabot.com/bluss/rust-itertools/issues/318) from bluss/std-deprecations
- [`d2e254f`](https://github.com/bluss/rust-itertools/commit/d2e254f22fe3bd962c38ab1db8d9f6c162dbf81c) API: Fix the mystery deprecation message for Step
- [`602f2f6`](https://github.com/bluss/rust-itertools/commit/602f2f675ea87c0860d9161cbfdc98d09911cde7) API: Deprecate .foreach() in favour of std's .for_each()
- Additional commits viewable in [compare view](https://github.com/bluss/rust-itertools/compare/0.7.11...0.8.0)
</details>
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