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v18.0.0: Release Wasmtime 18.0.0 (#7958)

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· 3116 commits to main since this release
v18.0.0
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18.0.0

Released 2024-02-20.

Added

  • The wasmtime-c-api-impl crate is now published on crates.io.
    #7837

  • A new EngineWeak type enables holding a weak pointer to an engine with the
    ability to dynamically and fallibly upgrade it to an Engine.
    #7797

  • The WebAssembly tail calls proposal can now be enabled through the C API.
    #7811

  • The import and export types of a Component can now be inspected at runtime.
    #7804

  • New APIs/types have been added to support a faster version of looking up
    module exports without using string lookups with Module::get_export_index.
    #7828

Changed

  • Owned resources represented with ResourceAny can now be passed as arguments
    to functions that require a borrow<T> parameter.
    #7783

  • Generated structures from wasmtime::component::bindgen! for exported
    interfaces are now all renamed to Guest to avoid conflicting with WIT names.
    #7794

  • Guest profiler output will now automatically demangle symbols.
    #7809

  • The wasmtime crate now has a runtime Cargo feature which, if disabled,
    enables building Wasmtime with only the ability to compile WebAssembly
    modules. This enables compiling Wasmtime's compilation infrastructure, for
    example, to WebAssembly itself.
    #7766

  • Support for the old wasi-common crate and the original implementation of
    "WASIp1" aka "preview1" is being deprecated in the wasmtime-wasi crate.
    Users should migrate to the wasmtime_wasi::preview2 implementation, which
    supports both WASIp1 and WASIp2, as in the next release the
    wasi-common-based reexports of wasmtime-wasi will be deleted.
    #7881

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