# Version ✨0.4✨ 🎉
## `EventHandler` API
The [`EventHandler` API](https://github.com/neon-bindings/rfcs/blob/master/text/0025-event-handler.md) is a new feature for scheduling work on the javascript main thread from other threads. Big thanks to @geovie for the RFC and implementation.
This feature is currently _unstable_ and gated by a `event-handler-api` feature flag.
## Improvements
* New project template updated for Rust 2018
## Bug Fixes
* Workaround for nodejs/node-gyp#1933
* Docs build fixed
* Temporarily disable static tests which keep breaking CI
## N-API
* Context/Isolate threading
* Scopes
* Strings
* Primitive values (numbers, undefined, null, boolean)
# Version 0.3.3
Hot fix for `neon build` in projects with many dependencies.
# Version 0.3.2
## Bug fixes and Small Features
* Disable node module registration on test build, allowing `cargo test` to be used on neon modules
* Added support for alternate `CARGO_TARGET_DIR` locations (e.g., workspaces)
* Added macros to `neon::prelude` to improve ergonomics in Rust 2018
* Link `win_delay_hook` when building with `electron-build-env`, fixing Windows Electron
* Fixed missing `__cxa_pure_virtual` on Linux
* Copy native files into `OUT_DIR` and build there to fix `cargo publish` and follow best practices
* Eliminated `mem::uniitialized()` usage, reducing warnings and fixing an instance of undefined behavior
## Potentially Breaking
The macOS link arguments were moved from `neon-cli` to `neon-build`. This is more idiomatic, but makes `neon-build` _required_ for macOS builds where it was unnecessary before.
Since `neon-build` has been included in the project template since `0.1` this change was not deemed significant enough to warrant a major revision.
## N-API
Neon 0.3.2 lays the groundwork for the next major revision. Development of Neon against an ABI stable Node API (N-API) will occur on master.
* Added `legacy-runtime` and `n-api` feature flags for toggling neon runtime
* Moved the legacy runtime to `nodejs-sys` crate
* Stubbed required `n-api` implementation
* Added `feature` flag to `neon-cli` to help configuring `n-api` projects
# Version 0.3.1
* Build v0.3 project templates by default in the CLI
# Version 0.3
## Breaking Changes
* [Removed support for Node 6](https://github.com/neon-bindings/neon/pull/420)
## Bug Fixes
* Correctly fail the build if [custom build command fails](https://github.com/neon-bindings/neon/pull/421)
* Fix breaking changes with v8 [`GetFunction`](https://github.com/neon-bindings/neon/pull/410)
* Moved `nan` from `devDependencies` to `dependencies` in [`neon-runtime`](https://github.com/neon-bindings/neon/pull/367)
* Changed neon [crate type](https://github.com/neon-bindings/neon/pull/358) from `dylib` to `cdylib`
* Ensure that neon module loading is [not optimized away](https://github.com/neon-bindings/neon/pull/392)
## Improvements
* Added support for [`CARGO_BUILD_TARGET` environment variable](https://github.com/neon-bindings/neon/pull/411)
# Version ✨0.2✨ 🎉
See the [Neon 0.2 Migration Guide](https://github.com/neon-bindings/neon/wiki/Neon-0.2-Migration-Guide) for documentation on migrating your projects from the Neon 0.1.x series to Neon 0.2, and please [let us know](https://github.com/neon-bindings/neon#get-involved) if you need help!
* Release automation (#318)
* New `ArrayBuffer` views API -- see [RFC 5](https://github.com/neon-bindings/rfcs/blob/master/text/0005-array-buffer-views.md) (#306)
* VM 2.0 -- see [RFC 14](https://github.com/neon-bindings/rfcs/blob/master/text/0014-vm-2.0.md) (#306)
* New `JsString` constructor -- see [RFC 21](https://github.com/neon-bindings/rfcs/blob/master/text/0021-string-constructor.md) (#322)
* Eliminated `JsInteger`, `JsVariant`, `callee()` -- see [RFC 22](https://github.com/neon-bindings/rfcs/blob/master/text/0022-zero-dot-two.md) (#323)
* Renamed `Key` to `PropertyKey` and its method names -- see [RFC 22](https://github.com/neon-bindings/rfcs/blob/master/text/0022-zero-dot-two.md) (#323)
* Module reorganization -- see [RFC 20](https://github.com/neon-bindings/rfcs/blob/master/text/0020-module-reorg.md) (#324)
* New `JsError` API -- see [RFC 23](https://github.com/neon-bindings/rfcs/blob/master/text/0023-error-subtyping.md) (#325)
* Eliminated `ToJsString` API -- see [RFC 22](https://github.com/neon-bindings/rfcs/blob/master/text/0022-zero-dot-two.md) (#326)
* Eliminated `NEON_NODE_ABI` env var -- see [RFC 22](https://github.com/neon-bindings/rfcs/blob/master/text/0022-zero-dot-two.md) (#327)
* Default to release builds -- see [RFC 22](https://github.com/neon-bindings/rfcs/blob/master/text/0022-zero-dot-two.md) (#328)
* Made `Buffer` construction safe by default (#329, #331)
* Made `Throw` not implement `std::error::Error` to avoid accidental suppression, thanks to [@kjvalencik](https://github.com/kjvalencik) (#334)
* Fixed a bug causing unnecessary rebuilds, thanks to [@kjvalencik](https://github.com/kjvalencik) (#343)
* Fixed a soundness bug in the `Task` API, thanks to [@kjvalencik](https://github.com/kjvalencik) (#335)
# Version 0.1.23
* Optimization in `Scope` structures, thanks to [@maciejhirsz](https://github.com/maciejhirsz) (#282)
* Fixed a memory leak in the `Task` API, thanks to [@kjvalencik](https://github.com/kjvalencik) (#291)
* Add support for Node 10, thanks to [@mhsjlw](https://github.com/mhsjlw) and [@nomadtechie](https://github.com/nomadtechie) (#314)
# Version 0.1.22
* Reinstate `JsInteger` (although it's deprecated) for now, to be removed in 0.2. (#279)
# Version 0.1.21
* Fix a bug that was causing annoying unnecessary rebuilds ([#242](https://github.com/neon-bindings/neon/issues/242)).
* New [API for getting the global object](https://api.neon-bindings.com/neon/scope/trait.scope#method.global) ([#249](https://github.com/neon-bindings/neon/issues/249)).
# Version 0.1.20
* Background task API ([#214](https://github.com/neon-bindings/neon/pull/214)).
* Fixes to Windows builds ([#221](https://github.com/neon-bindings/neon/pull/221), [#227](https://github.com/neon-bindings/neon/pull/227)), thanks to [@hone](https://github.com/hone)'s tenacious troubleshooting.
# Version 0.1.19
* TypeScript upgrade fixes ([neon-bindings/neon-cli#62](https://github.com/neon-bindings/neon-cli/pull/62), [neon-bindings/neon-cli#65](https://github.com/neon-bindings/neon-cli/pull/65)).
# Version 0.1.18
* CLI bugfix ([neon-bindings/neon-cli#59](https://github.com/neon-bindings/neon-cli/pull/59)).
* JsArrayBuffer ([#210](https://github.com/neon-bindings/neon/pull/210)).
# Version 0.1.17
* CLI bugfix ([neon-bindings/neon-cli#57](https://github.com/neon-bindings/neon-cli/pull/57)).
# Version 0.1.16
* CLI bugfix ([neon-bindings/neon-cli#56](https://github.com/neon-bindings/neon-cli/pull/56)).
# Version 0.1.15 (2017-05-21)
* Better Electron support in CLI's build process.
* Better support for Electron via the artifacts file ([neon-bindings/neon-cli#52](https://github.com/neon-bindings/neon-cli/pull/52)).
# Version 0.1.14 (2017-04-02)
* Ensure failing tests break the build ([#191](https://github.com/neon-bindings/neon/pull/191))
* Catch Rust panics and convert them to JS exceptions ([#192](https://github.com/neon-bindings/neon/pull/192))
* Implement `Error` for `Throw` ([#201](https://github.com/neon-bindings/neon/pull/191))
* Clean up the CLI and allow `neon build` to optionally take module names ([neon-bindings/neon-cli#48](https://github.com/neon-bindings/neon-cli/pull/48)).
# Version 0.1.13 (2017-02-17)
* More robust build scripts for neon-runtime, fixing Homebrew node installations (see [#189](https://github.com/neon-bindings/neon/pull/189))
# Version 0.1.12 (2017-02-16)
* [Optimized rooting protocol](https://github.com/neon-bindings/neon/commit/cef41584d9978eda2d59866a077cfe7c7d3fa46e)
* [Eliminate rustc warnings](https://github.com/neon-bindings/neon/pull/107)
* Lots of internal API docs
* Windows support! :tada:
* [Renamed `neon-sys` to `neon-runtime`](https://github.com/neon-bindings/neon/issues/169)
* Depend on `neon-build` as a build dependency (see [neon-bindings/neon-cli#46](https://github.com/neon-bindings/neon-cli/issues/46)).
# Version 0.1.11 (2016-08-08)
* [Exposed `This` trait](https://github.com/neon-bindings/neon/issues/101) to allow user-level abstractions involving `FunctionCall`
* Bump version to match Neon so they can be kept in sync from now on.
* Generate a `build.rs` to make Windows work (see [neon-bindings/neon-cli#42](https://github.com/neon-bindings/neon-cli/pull/42) and [neon-bindings/neon-cli#44](https://github.com/neon-bindings/neon-cli/issues/44)).
# Version 0.1.10 (2016-05-11)
* Added `JsError` API with support for throwing [all](https://github.com/neon-bindings/neon/issues/65) [standard](https://github.com/neon-bindings/neon/issues/66) [error](https://github.com/neon-bindings/neon/issues/67) [types](https://github.com/neon-bindings/neon/issues/74)
* [Test harness and CI integration](https://github.com/neon-bindings/neon/issues/80)!! :tada: :tada: :tada:
* API to [call JS functions from Rust](https://github.com/neon-bindings/neon/issues/60)
* API to [new JS functions from Rust](https://github.com/neon-bindings/neon/issues/61)
* Added [generalized `as_slice` and `as_mut_slice` methods](https://github.com/neon-bindings/neon/issues/64) to `CSlice` API.
* Fixed a [soundness issue](https://github.com/neon-bindings/neon/issues/64) with Locks.
## Incompatible Changes
* The `JsTypeError` type is gone, and replaced by the more general `JsError` type.
* `neon::js::error::JsTypeError::throw(msg)` is now `neon::js::error::JsError::throw(neon::js::error::kind::TypeError, msg)`
