proc-macro2

• Fix several bugs involving lexing of integer and float tokens with unusual suffixes (#252, #253, #254, #255)

• Match libproc_macro's UnwindSafe and RefUnwindSafe impls (#250)

• Match libproc_macro's rendering of whitespace in groups (#246, #247, thanks @Koxiaet)

• Remove procmacro2_semver_exempt feature gate on all methods stabilized in Rust 1.45 (#243)

• Fix discrepancy with libproc_macro in handling of negative numbers in token streams (#235)

• Allow using proc_macro2::fallback::force() from 1.0.12 at the same time as proc-macro2 = { default-features = false } (#233)

• impl Ord for proc_macro2::LineColumn (#230, https://github.com/rust-lang/rust/pull/72446)

• Support parsing arbitrarily deeply nested token streams without using excessive stack space (#231, #232)

• Add Span::mixed_site(), which is behind cfg(procmacro2_semver_exempt) for now but will be stabilized when Rust 1.45 is released (#228, thanks @kevinmehall)
• Update LineColumn::column to match libproc_macro's column computation, which is character-based (#229, thanks @jrvidal)

• Parse literal suffix on byte string, byte, and char literal tokens: br#"..."#suffix, b'?'suffix, '?'suffix

• Add a way to force avoid using the compiler's libproc_macro implementation even when available (#220)

(yanked)

• Enable span-locations feature when building for play.rust-lang.org

• Match the escaping behavior of libproc_macro when displaying non-ascii strings and characters

• Work around https://github.com/rust-lang/rust/issues/58736 which caused panics in TokenStream::from_str

• Return meaningful spans from Group::span_open and Group::span_close when running with span-locations feature enabled outside of a procedural macro

• No code changes.

Just retriggering a docs.rs build because 1.0.5 failed. See https://github.com/alexcrichton/proc-macro2/issues/203 and https://github.com/rust-lang/docs.rs/issues/440.

• Improve performance of impl Extend<TokenTree> for TokenStream (#198)

• Add Literal::subspan method to match libproc_macro (#195)

• Treat dev builds of rustc the same as a nightly, with unstable features available