chore(deps): bump proc-macro2 from 0.4.24 to 0.4.30

Bumps proc-macro2 from 0.4.24 to 0.4.30.

Release notes

*Sourced from [proc-macro2's releases](https://github.com/alexcrichton/proc-macro2/releases).* > ## 0.4.30 > - Implement Clone for TokenStream's IntoIter ([#177](https://github-redirect.dependabot.com/alexcrichton/proc-macro2/issues/177), thanks [@ivanbakel](https://github.com/ivanbakel)) > > ## 0.4.29 > - Support compiling with `RUSTFLAGS='-Z allow-features='` on a nightly compiler ([#176](https://github-redirect.dependabot.com/alexcrichton/proc-macro2/issues/176), thanks [@Nemo157](https://github.com/Nemo157)) > > ## 0.4.28 > - Avoid needlessly escaping `'` inside a string literal or `"` inside a character literal ([#60](https://github-redirect.dependabot.com/alexcrichton/proc-macro2/issues/60)) > - Add impls of Copy, Clone, Debug, PartialEq, Eq for proc_macro2::LineColumn > > ## 0.4.27 > - Add Cargo cfg `"span-locations"` to expose [`Span::start`](https://docs.rs/proc-macro2/0.4/proc_macro2/struct.Span.html#method.start) and [`Span::end`](https://docs.rs/proc-macro2/0.4/proc_macro2/struct.Span.html#method.end) accessors that give the line and column location of a Span ([#166](https://github-redirect.dependabot.com/alexcrichton/proc-macro2/issues/166)) > > Be aware that this involves storing more information than before inside of Spans which increases their size -- leading to possibly slower performance of any code involving proc-macro2 types (but only when the cfg is enabled). > > ## 0.4.26 > - Update documentation to 2018 edition > - Rename `span.unstable()` method to `span.unwrap()`; this method is usable from a stable compiler but panics if called from outside of a procedural macro > > ## 0.4.25 > - Disable stable shim when building with procmacro2_semver_exempt on a nightly compiler ([#158](https://github-redirect.dependabot.com/alexcrichton/proc-macro2/issues/158))

Commits

- [`f514921`](https://github.com/alexcrichton/proc-macro2/commit/f514921bb4405fea72b6289c200152f797d8b127) Release 0.4.30 - [`1ef4d12`](https://github.com/alexcrichton/proc-macro2/commit/1ef4d12484af055284bec8651cab8ccda7c31f2a) Merge pull request [#177](https://github-redirect.dependabot.com/alexcrichton/proc-macro2/issues/177) from ivanbakel/cloneable_intoiter - [`f6754d3`](https://github.com/alexcrichton/proc-macro2/commit/f6754d35b25d0abde2309cd15e5dfe11c62597d9) Make TokenStream's IntoIter derive Clone - [`79c8ed7`](https://github.com/alexcrichton/proc-macro2/commit/79c8ed793f9afe4bc491575a86256651dcf777b6) Release 0.4.29 - [`ce12a48`](https://github.com/alexcrichton/proc-macro2/commit/ce12a482f0365978e709c02c169fd45c8dbbe897) Remove double negative in !proc_macro_span_disallowed - [`b455dd7`](https://github.com/alexcrichton/proc-macro2/commit/b455dd77647a2aeceba367527772ab9a111b64bf) Use a cfg called proc_macro_span to control feature(proc_macro_span) - [`8a1827a`](https://github.com/alexcrichton/proc-macro2/commit/8a1827af91d09de6bdfa40041e73339131882726) Merge pull request [#176](https://github-redirect.dependabot.com/alexcrichton/proc-macro2/issues/176) from Nemo157/block-nightly-feature - [`099db2a`](https://github.com/alexcrichton/proc-macro2/commit/099db2afbbb1912be6510667d21505be3fa0a0ac) Detect if the user has disallowed usage of the proc_macro_span feature - [`692f49c`](https://github.com/alexcrichton/proc-macro2/commit/692f49ce86afd0ef2a851f34ec5367d771c62d4f) Fix reference to Serde in contribution section - [`16c2b45`](https://github.com/alexcrichton/proc-macro2/commit/16c2b45e92b54e7aedf1ff1e55238ff08b9cd948) Release 0.4.28 - Additional commits viewable in [compare view](https://github.com/alexcrichton/proc-macro2/compare/0.4.24...0.4.30)

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hobofan / cargo-nono

chore(deps): bump proc-macro2 from 0.4.24 to 0.4.30 #29