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Update release notes for 1.0 (#4885)

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Alex Crichton 2 years ago
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      RELEASES.md

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## 0.41.0
## 1.0.0
Unreleased.
Released 2022-09-20
This release marks the official 1.0 release of Wasmtime and represents the
culmination of the work amongst over 300 contributors. Wasmtime has been
battle-tested in production through multiple embeddings for quite some time now
and we're confident in releasing a 1.0 version to signify the stability and
quality of the Wasmtime engine.
More information about Wasmtime's 1.0 release is on the [Bytecode Alliance's
blog][ba-blog] with separate posts on [Wasmtime's performance
features][ba-perf], [Wasmtime's security story][ba-security], and [the 1.0
release announcement][ba-1.0].
As a reminder the 2.0 release of Wasmtime is scheduled for one month from now on
October 20th. For more information see the [RFC on Wasmtime's 1.0
release][rfc-1.0].
[ba-blog]: https://bytecodealliance.org/articles/
[ba-perf]: https://bytecodealliance.org/articles/wasmtime-10-performance
[ba-security]: https://bytecodealliance.org/articles/security-and-correctness-in-wasmtime
[ba-1.0]: https://bytecodealliance.org/articles/wasmtime-1-0-fast-safe-and-now-production-ready.md
[rfc-1.0]: https://github.com/bytecodealliance/rfcs/blob/main/accepted/wasmtime-one-dot-oh.md
### Added
* An incremental compilation cache for Cranelift has been added which can be
enabled with `Config::enable_incremental_compilation`, and this option is
disabled by default for now. The incremental compilation cache has been
measured to improve compile times for cold uncached modules as well due to
some wasm modules having similar-enough functions internally.
[#4551](https://github.com/bytecodealliance/wasmtime/pull/4551)
* Source tarballs are now available as part of Wasmtime's release artifacts.
[#4294](https://github.com/bytecodealliance/wasmtime/pull/4294)
* WASI APIs that specify the REALTIME clock are now supported.
[#4777](https://github.com/bytecodealliance/wasmtime/pull/4777)
* WASI's socket functions are now fully implemented.
[#4776](https://github.com/bytecodealliance/wasmtime/pull/4776)
* The native call stack for async-executed wasm functions are no longer
automatically reset to zero after the stack is returned to the pool when using
the pooling allocator. A `Config::async_stack_zeroing` option has been added
to restore the old behavior of zero-on-return-to-pool.
[#4813](https://github.com/bytecodealliance/wasmtime/pull/4813)
* Inline stack probing has been implemented for the Cranelift x64 backend.
[#4747](https://github.com/bytecodealliance/wasmtime/pull/4747)
### Changed
* Generating of native unwind information has moved from a
`Config::wasm_backtrace` option to a new `Config::native_unwind_info` option
and is enabled by default.
[#4643](https://github.com/bytecodealliance/wasmtime/pull/4643)
* The `memory-init-cow` feature is now enabled by default in the C API.
[#4690](https://github.com/bytecodealliance/wasmtime/pull/4690)
* Back-edge CFI is now enabled by default on AArch64 macOS.
[#4720](https://github.com/bytecodealliance/wasmtime/pull/4720)
* WASI calls will no longer return NOTCAPABLE in preparation for the removal of
the rights system from WASI.
[#4666](https://github.com/bytecodealliance/wasmtime/pull/4666)
### Internal
This section of the release notes shouldn't affect external users since no
public-facing APIs are affected, but serves as a place to document larger
changes internally within Wasmtime.
* Differential fuzzing has been refactored and improved into one fuzzing target
which can execute against any of Wasmtime itself (configured differently),
wasmi, V8, or the spec interpreter. Fuzzing now executes each exported
function with fuzz-generated inputs and the contents of all of memory and each
exported global is compared after each execution. Additionally more
interesting shapes of modules are also possible to generate.
[#4515](https://github.com/bytecodealliance/wasmtime/pull/4515)
[#4735](https://github.com/bytecodealliance/wasmtime/pull/4735)
[#4737](https://github.com/bytecodealliance/wasmtime/pull/4737)
[#4739](https://github.com/bytecodealliance/wasmtime/pull/4739)
[#4774](https://github.com/bytecodealliance/wasmtime/pull/4774)
[#4773](https://github.com/bytecodealliance/wasmtime/pull/4773)
[#4845](https://github.com/bytecodealliance/wasmtime/pull/4845)
[#4672](https://github.com/bytecodealliance/wasmtime/pull/4672)
[#4674](https://github.com/bytecodealliance/wasmtime/pull/4674)
* The x64 backend for Cranelift has been fully migrated to ISLE.
[#4619](https://github.com/bytecodealliance/wasmtime/pull/4619)
[#4625](https://github.com/bytecodealliance/wasmtime/pull/4625)
[#4645](https://github.com/bytecodealliance/wasmtime/pull/4645)
[#4650](https://github.com/bytecodealliance/wasmtime/pull/4650)
[#4684](https://github.com/bytecodealliance/wasmtime/pull/4684)
[#4704](https://github.com/bytecodealliance/wasmtime/pull/4704)
[#4718](https://github.com/bytecodealliance/wasmtime/pull/4718)
[#4726](https://github.com/bytecodealliance/wasmtime/pull/4726)
[#4722](https://github.com/bytecodealliance/wasmtime/pull/4722)
[#4729](https://github.com/bytecodealliance/wasmtime/pull/4729)
[#4730](https://github.com/bytecodealliance/wasmtime/pull/4730)
[#4741](https://github.com/bytecodealliance/wasmtime/pull/4741)
[#4763](https://github.com/bytecodealliance/wasmtime/pull/4763)
[#4772](https://github.com/bytecodealliance/wasmtime/pull/4772)
[#4780](https://github.com/bytecodealliance/wasmtime/pull/4780)
[#4787](https://github.com/bytecodealliance/wasmtime/pull/4787)
[#4793](https://github.com/bytecodealliance/wasmtime/pull/4793)
[#4809](https://github.com/bytecodealliance/wasmtime/pull/4809)
* The AArch64 backend for Cranelift has seen significant progress in being
ported to ISLE.
[#4608](https://github.com/bytecodealliance/wasmtime/pull/4608)
[#4639](https://github.com/bytecodealliance/wasmtime/pull/4639)
[#4634](https://github.com/bytecodealliance/wasmtime/pull/4634)
[#4748](https://github.com/bytecodealliance/wasmtime/pull/4748)
[#4750](https://github.com/bytecodealliance/wasmtime/pull/4750)
[#4751](https://github.com/bytecodealliance/wasmtime/pull/4751)
[#4753](https://github.com/bytecodealliance/wasmtime/pull/4753)
[#4788](https://github.com/bytecodealliance/wasmtime/pull/4788)
[#4796](https://github.com/bytecodealliance/wasmtime/pull/4796)
[#4785](https://github.com/bytecodealliance/wasmtime/pull/4785)
[#4819](https://github.com/bytecodealliance/wasmtime/pull/4819)
[#4821](https://github.com/bytecodealliance/wasmtime/pull/4821)
[#4832](https://github.com/bytecodealliance/wasmtime/pull/4832)
* The s390x backend has seen improvements and additions to fully support the
Cranelift backend for rustc.
[#4682](https://github.com/bytecodealliance/wasmtime/pull/4682)
[#4702](https://github.com/bytecodealliance/wasmtime/pull/4702)
[#4616](https://github.com/bytecodealliance/wasmtime/pull/4616)
[#4680](https://github.com/bytecodealliance/wasmtime/pull/4680)
* Significant improvements have been made to Cranelift-based fuzzing with more
supported features and more instructions being fuzzed.
[#4589](https://github.com/bytecodealliance/wasmtime/pull/4589)
[#4591](https://github.com/bytecodealliance/wasmtime/pull/4591)
[#4665](https://github.com/bytecodealliance/wasmtime/pull/4665)
[#4670](https://github.com/bytecodealliance/wasmtime/pull/4670)
[#4590](https://github.com/bytecodealliance/wasmtime/pull/4590)
[#4375](https://github.com/bytecodealliance/wasmtime/pull/4375)
[#4519](https://github.com/bytecodealliance/wasmtime/pull/4519)
[#4696](https://github.com/bytecodealliance/wasmtime/pull/4696)
[#4700](https://github.com/bytecodealliance/wasmtime/pull/4700)
[#4703](https://github.com/bytecodealliance/wasmtime/pull/4703)
[#4602](https://github.com/bytecodealliance/wasmtime/pull/4602)
[#4713](https://github.com/bytecodealliance/wasmtime/pull/4713)
[#4738](https://github.com/bytecodealliance/wasmtime/pull/4738)
[#4667](https://github.com/bytecodealliance/wasmtime/pull/4667)
[#4782](https://github.com/bytecodealliance/wasmtime/pull/4782)
[#4783](https://github.com/bytecodealliance/wasmtime/pull/4783)
[#4800](https://github.com/bytecodealliance/wasmtime/pull/4800)
* Optimization work on cranelift has continued across various dimensions for
some modest compile-time improvements.
[#4621](https://github.com/bytecodealliance/wasmtime/pull/4621)
[#4701](https://github.com/bytecodealliance/wasmtime/pull/4701)
[#4697](https://github.com/bytecodealliance/wasmtime/pull/4697)
[#4711](https://github.com/bytecodealliance/wasmtime/pull/4711)
[#4710](https://github.com/bytecodealliance/wasmtime/pull/4710)
[#4829](https://github.com/bytecodealliance/wasmtime/pull/4829)
--------------------------------------------------------------------------------
## 0.40.0

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