Bump quote from 1.0.10 to 1.0.20

[dependabot]

Bumps quote from 1.0.10 to 1.0.20.

Release notes

Sourced from quote's releases.

1.0.20

• Remove workaround for dealing with invalid spans on new enough compilers (#224, thanks @​mystor)
• Use Ident::new_raw to quote raw identifiers (#225, thanks @​mystor)

1.0.19

• Improve the way rustc's -Zunpretty=expanded renders quote's expanded code (#221)

1.0.18

• Special case quote!/quote_spanned! for inputs of size 1 and 2 tokens to improve performance (#217, thanks @​nnethercote)
• Documentation improvement (#219)

1.0.17

• Documentation improvements

1.0.16

• Improve compile time of quote! and quote_spanned! calls by a few percent (#209, #210, thanks @​nnethercote @​lqd)

1.0.15

• Retrigger docs.rs build to work around rustdoc regression (rust-lang/rust#92331)

1.0.14

• Optimization to reduce calls over the proc macro bridge (#203)

1.0.13

• Documentation improvements

1.0.12

• Fix proc-macro2 dependency to work with -Zminimal-versions builds

1.0.11

• Improve performance of quote invocations involving literals, lifetimes, and underscore tokens

Commits

• 5801746 Release 1.0.20
• 95bb29c Hygienic path for ::std::option::Option
• 7286307 Merge pull request #226 from dtolnay/format
• a2389ee Call 'format!' through an unambiguous path
• cb2ba9f Rearrange push_ident internals
• 1e89973 Merge pull request #225 from mystor/ident_new_raw
• ca2b2ed Use Ident::new_raw to quote raw identifiers
• 4663783 Link to explain why an invalid span workaround is needed
• 3f694ca Merge pull request #224 from mystor/rm_invalid_span_workaround
• 00052cc Disable the invalid span workaround in spanned.rs on patched versions of rustc
• Additional commits viewable in compare view

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[dependabot]

Superseded by #112.