Released 2024-02-20
Added
* The `wasmtime-c-api-impl` crate is now published on crates.io.
[7837](https://github.com/bytecodealliance/wasmtime/pull/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](https://github.com/bytecodealliance/wasmtime/pull/7797)
* The WebAssembly tail calls proposal can now be enabled through the C API.
[7811](https://github.com/bytecodealliance/wasmtime/pull/7811)
* The import and export types of a `Component` can now be inspected at runtime.
[7804](https://github.com/bytecodealliance/wasmtime/pull/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](https://github.com/bytecodealliance/wasmtime/pull/7828)
Changed
* Owned resources represented with `ResourceAny` can now be passed as arguments
to functions that require a `borrow<T>` parameter.
[7783](https://github.com/bytecodealliance/wasmtime/pull/7783)
* Generated structures from `wasmtime::component::bindgen!` for exported
interfaces are now all renamed to `Guest` to avoid conflicting with WIT names.
[7794](https://github.com/bytecodealliance/wasmtime/pull/7794)
* Guest profiler output will now automatically demangle symbols.
[7809](https://github.com/bytecodealliance/wasmtime/pull/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](https://github.com/bytecodealliance/wasmtime/pull/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](https://github.com/bytecodealliance/wasmtime/pull/7881)
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