Bump syn from 0.15.40 to 1.0.20

[dependabot-preview[bot]]

Bumps syn from 0.15.40 to 1.0.20.

Release notes

Sourced from syn's releases.

1.0.20

• Improve span of error message when an error during syn::Macro::parse_body is triggered past the last token of the macro body (#791)

1.0.19

• Parse a more lenient extern type syntax inside extern blocks (#763)

1.0.18

• Ignore unparsed empty None-delimited groups at the end of a macro input (#783)

1.0.17

• Expose syn::Lit in default-features = false mode

1.0.16

• Fix parsing of &raw raw reference operator (rust-lang/rust#64490) to require explicitly specified constness, &raw mut or &raw const

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

... (truncated)

Commits

• 80c0238 Release 1.0.20
• 5e65424 Merge pull request #791 from dtolnay/close
• 1451738 Somewhat better scope span for Macro::parse_body
• 89a9ab1 Update test suite to nightly-2020-05-10
• e51bb8b Release 1.0.19
• 8e016b4 Merge pull request #790 from dtolnay/ety
• e98f372 Parse ForeignItem type with generics and bounds
• f104279 Remove travis bug workaround
• d290269 Update build status badge to GitHub Actions
• 562ce7b Remove Travis configuration
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually - `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself) - `@dependabot use these labels` will set the current labels as the default for future PRs for this repo and language - `@dependabot use these reviewers` will set the current reviewers as the default for future PRs for this repo and language - `@dependabot use these assignees` will set the current assignees as the default for future PRs for this repo and language - `@dependabot use this milestone` will set the current milestone as the default for future PRs for this repo and language - `@dependabot badge me` will comment on this PR with code to add a "Dependabot enabled" badge to your readme Additionally, you can set the following in your Dependabot [dashboard](https://app.dependabot.com): - Update frequency (including time of day and day of week) - Pull request limits (per update run and/or open at any time) - Out-of-range updates (receive only lockfile updates, if desired) - Security updates (receive only security updates, if desired)

[dependabot-preview[bot]]

Superseded by #574.