Merge pull request swiftwasm#278 from swiftwasm/katei/fix-empty-typed…

…-array

Fix empty TypedArray creation

Merge pull request swiftwasm#274 from swiftwasm/yt/fix-multithread-ca…

…che-issue

Stop use of global variable as a object cache

Add CONTRIBUTING.md

Remove unnecessary `_JSObjectProtocol`

The workaround is no longer needed for the latest toolchain.

Merge pull request swiftwasm#261 from swiftwasm/yt/xcode16

Simplify the release workflow

Bump version to 0.20.0, update `CHANGELOG.md`

Bump version to 0.19.3, update `CHANGELOG.md`

Bump version to 0.19.2, update `CHANGELOG.md`

Bump version to 0.19.1, update `CHANGELOG.md`