Bump syn from 0.15.40 to 1.0.8

[dependabot-preview]

Bumps syn from 0.15.40 to 1.0.8.

Release notes

Sourced from syn's releases.

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

1.0.4

• Fix size_hint of Punctuated iterators (#700, thanks @​ExpHP)

1.0.3

• Add Path::get_ident (#696, thanks @​infinity0)

1.0.2

• Documentation improvements

1.0.1

• Add LitInt::base10_parse to produce error that has the right span when parsing literal digits

1.0.0

Syn is a library for parsing Rust code, largely geared toward use in procedural macros but generally applicable as a Rust parser outside of that too.

Syn was originally a sidequest on the effort to making Serde's derive macros work on stable Rust in 2016, but has since taken off as a foundational library in its own right. These days it appears in support of diverse use cases like:

• convenient interop between Rust-based Wasm modules and JavaScript,
• easy command line interfaces,
• a polished async experience, and
• a concurrency framework for embedded real time systems.

Excitingly, the fraction of open source Rust projects that rely on Syn is still climbing aggressively (see red line). This reflects how important procedural macros are to the experience we want people to have when working with Rust — empowering everyone to build reliable and efficient software.

... (truncated)

Commits

• 3c7d7dc Release 1.0.8
• 11090bc Merge pull request #716 from 8BitMate/master
• 2af11a5 Parse TypeTuple with one element requires trailing comma
• a938fcd Update test suite to nightly-2019-11-08
• 97d2ba4 Temporarily disable Codegen builder while crossbeam-channel build is broken
• fa06849 Remove unimportant inline attribute
• 2520993 Merge pull request 715 from mystor:doc_comment
• 2c02e50 Add clarifying doc comment parsing example
• b06fef4 Release 1.0.7
• c602c15 Merge pull request #714 from mystor/receiver
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #545.