cargo-rdme 2.0.0

1. Use rustdoc JSON for intralink resolution. This fixes a bunch of limitation we had with the previous syn-based
   engine:
   1. Support relative paths from the crate root (self::, bare names, multi-level module-relative).
   2. Support all item kinds, including struct/union fields, enum variants, trait items, type aliases, statics, macros,
      proc-macros, and primitive types (#10, #169).
   3. Support explicit kind disambiguators (struct@, fn@, primitive@, ...) and suffix forms (Foo(), Foo!)
      (#1, #186).
   4. Support intralinks to items in any external crate, including regular dependencies and sibling crates within a
      workspace (#152, #153).
   5. Support intralinks through re-exports, including local pub use and stdlib re-exports like std::vec::Vec (#5).
   6. Support impl items defined in a module other than the type's defining module (#170).
   7. Support rustdoc's shortcut link form for intralinks, in backticked ([`Foo`]), path ([foo::Bar]), and
      bare-identifier ([Foo]) variants (#7).
   8. Macro-generated items, which the previous walker could not see, are now supported.
2. Add --all-features, --features, and --no-default-features flags (and matching [intralinks] config keys) to
   control how rustdoc builds the crate.