Bump proc-macro2 from 1.0.24 to 1.0.44

[dependabot]

Bumps proc-macro2 from 1.0.24 to 1.0.44.

Release notes

Sourced from proc-macro2's releases.

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)

1.0.39

• Replace unicode-xid with unicode-ident crate: https://github.com/dtolnay/unicode-ident

1.0.38

• Reduce allocations done by Literal::byte_string constructor (#328)

1.0.37

• Rely on unicode-xid to optimize ASCII properly (#325)

1.0.36

• Improve performance of creating literal tokens through quote! macro

1.0.35

• Try to diagnose "cannot find type SourceFile" errors better (#311)

1.0.34

• Work around doc build failure due to docs.rs flags change (#310)

1.0.33

• Enable Group::span_open/span_close on Rust 1.55+ to reflect their stabilization in rustc (#305, rust-lang/rust#86136)

1.0.32

• Support negative int and float literals in FromStr (rust-lang/rust#87262, #301)

1.0.31

• Update Cargo metadata to new repository location

1.0.30

• Use proc_macro::is_available on Rust 1.57+ to support projects built with panic=abort or cg_clif (#300, thanks @​bjorn3)

1.0.29

• Pick up stable implementation of proc_macro's impl FromStr for Literal (#287)

1.0.28

... (truncated)

Commits

• 8f4fd2c Release 1.0.44
• d531452 Add a sponsors link
• c0592e3 Merge pull request #348 from dtolnay/beforeafter
• cc97264 Expose proc_macro's before() and after() methods on Span
• 648e2d8 Remove default package.readme metadata from Cargo.toml
• a9fcdc0 GitHub Workflows security hardening
• c946dfe Update ui test suite to nightly-2022-08-23
• 774a265 Release 1.0.43
• 95f5e5a Update keywords in crates.io metadata
• 971948a Change std imports to core where possible
• Additional commits viewable in compare view

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[dependabot]

Superseded by #130.