Bump syn from 1.0.74 to 1.0.84

[dependabot]

Bumps syn from 1.0.74 to 1.0.84.

Release notes

Sourced from syn's releases.

1.0.84

• Add parse_quote_spanned! macro which is a combination parse_quote! + quote_spanned!

1.0.83

• Fix panic parsing trait impl with qself in trait type: impl <Thing<>>::Trait for Type {} (#1109)
• Preserve attributes on let-else stmt: #[attr] let pat = val else { return } (#1110)

1.0.82

• Support parenthesized generic argument syntax with :: disambiguator: Fn::() -> ! (#1096)

1.0.81

• Support arbitrary precision negative literal tokens on rustc 1.56+ (#1087, #1088)

1.0.80

• Parse unstable ~const syntax in where-clauses (#1083, tracking issue rust-lang/rust#67792)

1.0.79

• Support trailing + in dyn Trait syntax, including bare (non-dyn) pre-2018 trait object syntax (#1075, #1077, #1078, #1079, #1080, #1081)

1.0.78

• Parse trailing + in the bounds of impl Trait type (#1073)

1.0.77

• Match Rust 1.57+'s parsing of dot and question mark after a curly braced macro invocation (#1068)

1.0.76

• Parse unstable let–else syntax (#1050, #1057)
• Parse qualified braced variant expressions and patterns: <E>::V {..} (#1058, #1059)
• Fix precedence of outer attributes in front of an assignment expression in statement position (#1060)

1.0.75

• Improve spans on a method without body inside an impl block
• Documentation improvements (#922, thanks @​Tamschi)

Commits

• 277b55f Release 1.0.84
• 002a247 Merge pull request #1114 from dtolnay/punctuatedlink
• 31c0ba6 Merge pull request #1113 from dtolnay/parsequotespanned
• 008cb17 Rely on rustdoc to resolve Punctuated<T, P> to an intra doc link
• ce69299 Add parse_quote_spanned macro = parse_quote + quote_spanned
• c39aa78 Change test suite atomic from SeqCst to Relaxed
• 27ee511 Release 1.0.83
• 47e1bc3 Merge pull request #1110 from dtolnay/attrletelse
• 8d24d27 Preserve attributes on let-else stmt
• b5834ab Update test suite to nightly-2021-12-22
• Additional commits viewable in compare view

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