Download Wasmtime 21.0.0

Added
- The wasmtime explore subcommand now supports *.wat files. #8314
- Wasmtime now supports DWARF Fission *.dwp files. #8055
- The wasmtime crate now supports #![no_std], and more information about this transition can be found in #8341. #8463 #8483 #8485 #8528 #8533
- A Config knob is now available for one-entry call_indirect caching to speed up modules with lots of call_indirect instructions. #8509
- Cranelift's riscv64 backend has initial support for the Zfa Extension. #8536
- The WebAssembly tail-calls proposal is now enabled by default when using the Cranelift backend, except for the s390x architecture. #8540
Changed
- Support for NaN canonicalization on x64 has been optimized to avoid branches. #8313
- The bindgen! macro now defaults to assuming imports cannot trap, but this behavior is configurable at macro-generation time. #8310
- The fd_{read,write} implementations in wasmtime-wasi have been optimized. #8303
- The wasmtime-wasi-http crate has been refactored and has improved documentation. #8332 #8347
- Unused with parameters in bindgen! now generate an error. #8371
- The fd_read implementation in wasmtime-wasi now only reads into a single iovec per call. #8415
- The wasmtime_val_t type in the C API no longer holds any allocations. This type must still be manually managed to properly unroot values, however. #8451
- Add an optimized "sleep" path for poll_oneoff to wasmtime-wasi. #8429
- The Wasmtime-internal wasmtime-runtime crate has been removed. #8501
- The pooling allocator now allows twice as many elements as before. #8527
- Using CMake to build the C API has been improved along a number of axes. #8490 #8497 #8549
Fixed
- Pooling allocator CLI options are now respected with the wasmtime serve subcommand. #8525