Bump either from 1.5.3 to 1.7.0

[dependabot[bot]]

Bumps either from 1.5.3 to 1.7.0.

Commits

• d6f088e Merge pull request #73 from cuviper/release-1.7.0
• 2370b06 Release 1.7.0
• f1eca77 Merge pull request #72 from cuviper/clone_from
• f90883c Specialize Clone::clone_from
• 26a6dc7 Merge pull request #71 from cuviper/iter-more
• 366fa77 Implement FusedIterator
• 1c2f758 Specialize DoubleEndedIterator::rfind
• 4721198 Specialize more Iterator methods
• fbbadd0 Merge pull request #66 from Ten0/fix_missing_double_ended_iter_spec
• ea284e2 Delay nth_back until we have MSRV >= 1.37
• Additional commits viewable in compare view

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