Update arrayvec requirement from 0.5.0 to 0.7.1

[dependabot]

Updates the requirements on arrayvec to permit the latest version.

Changelog

Sourced from arrayvec's changelog.

0.7.1

• Add new ArrayVec methods .take() and .into_inner_unchecked() by @​conradludgate
• clone_from now uses truncate when needed by @​a1phyr

0.7.0

• fn new_const is now the way to const-construct arrayvec and arraystring, and fn new has been reverted to a regular "non-const" function. This works around performance issue #182, where the const fn version did not optimize well. Change by @​bluss with thanks to @​rodrimati1992 and @​niklasf for analyzing the problem.

• The deprecated feature flag unstable-const-fn was removed, since it's not needed

• Optimize .retain() by using the same algorithm as in std, change by @​niklasf, issue #174. Original optimization in Rust std by @​oxalica in Optimize Vec::retain rust-lang/rust#81126

0.6.1

• The ArrayVec::new and ArrayString::new constructors are properly const fns on stable and the feature flag unstable-const-fn is now deprecated. by @​rodrimati1992

• Small fix to the capacity check macro by @​Xaeroxe

• Typo fix in documentation by @​cuviper

• Small code cleanup by @​bluss

0.6.0

• The const generics release 🎉. Arrayvec finally implements what it wanted to implement, since its first version: a vector backed by an array, with generic parameters for the arbitrary element type and backing array capacity.

  The New type syntax is ArrayVec<T, CAP> where CAP is the arrayvec capacity. For arraystring the syntax is ArrayString<CAP>.

  Length is stored internally as u32; this limits the maximum capacity. The size of the ArrayVec or ArrayString structs for the same capacity may grow slightly compared with the previous version (depending on padding requirements for the element type). Change by @​bluss.

• Arrayvec's .extend() and FromIterator/.collect() to arrayvec now panic if the capacity of the arrayvec is exceeded. Change by @​bluss.

• Arraystring now implements TryFrom<&str> and TryFrom<fmt::Arguments> by @​c410-f3r

• Minimum supported rust version is Rust 1.51

... (truncated)

Commits

• 0c866b3 0.7.1
• 515a18c Merge pull request #187 from conradludgate/into-inner-take
• 0fdf39f debug-assert
• 16c8e4d tests + docs
• dfceb6d Merge pull request #186 from a1phyr/use_truncate_in_clone_from
• 6dc46b3 update take
• 8778483 feat: API additions
• 6be5ed4 Use truncate in clone_from
• 7b290b7 DOC: Mention author @​oxalica in changelog for retain opt
• bf4ee7e DOC: Update 0.7.0 changelog with forgotten item #174
• Additional commits viewable in compare view

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[dependabot]

Looks like arrayvec is up-to-date now, so this is no longer needed.