Bump syn from 0.15.40 to 1.0.30

[dependabot-preview[bot]]

Bumps syn from 0.15.40 to 1.0.30.

Release notes

Sourced from syn's releases.

1.0.30

• Parse struct init expressions where the type name is an interpolated macro_rules metavariable, such as $struct {} where $struct:ident (#842)
• Handle nesting of None-delimited groups (#843, thanks @Aaron1011)

1.0.29

• Parse macro call exprs where the macro name is an interpolated macro_rules metavariable, such as $macro!() (#838)
• Parse paths containing generic parameters where the first path segment is an interpolated macro_rules metavariable, such as $seg<'a> (#839)

1.0.28

• Recognize empty None-delimited group produced by interpolating a $:vis macro metavariable when parsing a Visibility (#836)

1.0.27

• Parse function calls in which the callee is an interpolated macro variable $fn(...) (#833)

1.0.26

• Parse paths containing an interpolated first component, such as $first::rest (rust-lang/rust#72608, #832)

1.0.25

• Parse opt-out ?const trait bounds (#767)
• Parse const generics in method generic arguments (#816, thanks @yodaldevoid)
• Parse trait bounds on type alias items (#821)
• Parse const generics on impl blocks (#822)
• Fix precedence of attributes on binary expressions to match rustc (#823)
• Remove parsing of extern:: paths which were removed from nightly in January 2019 (#825, rust-lang/rust#57572)
• Add Punctuated::clear, analogous to Vec::clear (#828)

1.0.24

• Parse mut self receiver in function pointer type (#812, #814)
• Parse const trait impls (#813)
• Improve error reporting inside struct expressions and struct patterns (#818)

1.0.23

• Parse inner attributes in traits (#803)
• Parse const underscore in traits and impls (#804)
• Implement Extend for Error (#805)
• Parse Or patterns (#806)
• Parse outer attributes on Expr* structs (#807)
• Parse top level const/static without value (#808)
• Parse syntactically accepted functions (#809)
• Parse extern static with value (#810)

Thanks @taiki-e for all of these.

1.0.22

• Parse literal suffix on byte string, byte, and char literal tokens: br#"..."#suffix, b'?'suffix, '?'suffix (#799, #800)

1.0.21

• Documentation improvements

1.0.20

... (truncated)

Commits

• 89658fc Release 1.0.30
• dd68696 Merge pull request 843 from Aaron1011/feature/multiple-empty
• 405f1bb Handle multiple nested None-delimited groups
• 7a81558 Merge pull request #842 from dtolnay/group
• d300698 Parse Expr::Struct containing None-delimited ident name
• 44c523a Add test for struct init expr containing macro metavariable
• 46a183d Resolve match_wildcard_for_single_variants pedantic lints
• b30011c Release 1.0.29
• d97a109 Merge pull request #839 from dtolnay/ty
• ad937a6 Parse Type::Path containing None-delimited group segment
• Additional commits viewable in compare view

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[dependabot-preview[bot]]

Superseded by #593.