Changes in version 0.1.0.9000                      

  - Added references to the S7 traits discussion in RConsortium/S7#34.

                 Changes in version 0.1.0 (2026-05-07)                  

  - Renamed the primary new_interface() requirement argument to
    generics; methods remains a compatibility alias.
  - Tightened interface and trait requirements to require S7 generics
    created with S7::new_generic().
  - Added optional progressive argument and return checks for interface
    requirements and trait methods, including with() and %::% evaluation
    syntax.
  - Reworked contract descriptor objects as internal S7 classes
    throughout.
  - Added a Haskell-style Maybe/monad dictionary example to the
    interface and trait vignette.
  - Added CRAN-facing vignettes with number-like, vector-like, and
    bioinformatics container examples.
  - Added CRAN submission comments and metadata updates for vignette
    building.
  - Fixed impl_trait() so failed S7 method registration no longer leaves
    a stale trait implementation record.
  - Preserved explicit NULL associated item values and allowed subtraits
    to retrieve inherited associated items.
  - Added regression tests for trait registration failure and associated
    metadata edge cases.
  - Simplified the README to keep the Go/Rust analogies clearly scoped
    to runtime S7 helpers.