Bump proc-macro2 from 1.0.39 to 1.0.46

[dependabot]

Bumps proc-macro2 from 1.0.39 to 1.0.46.

Release notes

Sourced from proc-macro2's releases.

1.0.46

• Make proc_macro2::TokenStream's FromStr impl consistent with proc_macro::TokenStream's on strings that begin with a byte order mark \u{feff} (#353)

1.0.45

• Fix panic on parsing disallowed raw identifiers such as r#self (#351)

1.0.44

• Expose span.before() and span.after() to access an empty Span located immediately before or after the input span (#348, upstream tracking issue: rust-lang/rust#87552)

1.0.43

• Add keywords to crates.io metadata

1.0.42

• Improve parsing performance in non-macro mode (#335)
• Expose a size_hint() for TokenStream's iterator (#334)

1.0.41

• Produce an accurate .size_hint() from TokenStream's iterator (#334)

1.0.40

• Stabilize Ident::new_raw constructor (#331, thanks @​mystor)

Commits

• 69150f4 Release 1.0.46
• 6004b0a Merge pull request #354 from dtolnay/bom
• 1d068c8 Test that byte order mark can only go at beginning of input
• e2327f0 Strip a byte order mark if present
• eeb2e5b Add a test involving byte order mark
• f26128d Release 1.0.45
• 4784921 Merge pull request #352 from dtolnay/fuzz
• 4f0ade5 Check for outdated deps in fuzz target
• 84fd957 Add CI build to cover fuzz target
• 4a8ad4d Add fuzz target for fallback TokenStream parser
• Additional commits viewable in compare view

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[dependabot]

The following labels could not be found: A2-insubstantial, B0-silent, C1-low 📌.

[dependabot]

Superseded by #34.