Bump syn from 0.15.40 to 1.0.15

[dependabot-preview]

Bumps syn from 0.15.40 to 1.0.15.

Release notes

Sourced from syn's releases.

1.0.15

• Add Punctuated::first_mut to return a mut reference to the first sequence element

1.0.14

• Produce more helpful error messages from Attribute::parse_args

1.0.13

• Allow parse_quote! to parse Vec<Stmt>, with the same behavior as Block::parse_within (#741)

1.0.12

• Reject function signatures with an incorrectly placed receiver parameter, like fn f(x: u8, &self)
• Produce correctly spanned error when parsing punct beyond the end of a delimited group (#739)

1.0.11

• Implement quote::IdentFragment for syn::Member and syn::Index so that spans are preserved when using these types in quote's format_ident! macro

  use quote::format_ident;
  use syn::Index;
  let index: Index = /* ... */;
  let ident = format_ident!("__{}", index); // produces __0, __1, etc

1.0.10

• Provide Hash and Eq impls for syn::Member even without "extra-traits" feature enabled, as this type is commonly useful in a hashset

1.0.9

• Fix failure to parse tuple struct fields of tuple type starting with crate (#720, #723, thanks @mystor)
• Fix unexpected tokens being ignored when using Speculative::advance_to (#721, #723, thanks @mystor)

1.0.8

• Require trailing comma when parsing TypeTuple with one element (#716, thanks @8BitMate)

1.0.7

• Add a receiver getter to syn::Signature (#714, thanks @mystor)

  impl Signature {
      /// A method's `self` receiver, such as `&self` or `self: Box<Self>`.
      pub fn receiver(&self) -> Option<&FnArg>;
  }

1.0.6

• Add conversions from Item{Struct,Enum,Union} into DeriveInput (#711, thanks @mystor)
• Add Fields::len and Fields::is_empty (#712, thanks @mjbshaw)

1.0.5

• Expose syn::Variadic with just "derive" feature, not "full", because it appears in Type::BareFn

... (truncated)

Commits

• d4fc613 Release 1.0.15
• e6cf1dd Add syntax issue links
• dd8a4db Categorize newly added syntax
• a79b074 Update rust repo revision to nightly-2020-02-21
• 91c662a Strip common prefix from paths in test path filter
• 86c35d9 Merge pull request #757 from dtolnay/first_mut
• b5c822f Add Punctuated::first_mut
• 3cd6631 Simplify last and last_mut implementations to use iterators
• f525d0a Update test suite to nightly-2020-02-21
• 899fdce Update test suite to nightly-2020-02-18
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #559.