Thanks to @anba for spotting this: https://github.com/tc39/test262/pull/1014/files/4843f049fafb6cdd61e3be011e3701cc94a9fe46#r116528031

The proposal is no longer on Stage 3 neither in active development.

From https://github.com/tc39/ecmascript_simd

> SIMD.js has been taken out of active development in TC39 and removed from Stage 3, and is not being pursued by web browsers for implementation.

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>

* Add tests for Promises rejection queue

These basic tests assert the rejection is captured but a later queued job
from a chain of then calls.

* fixup! Add tests for Promises rejection queue

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>

Ref. https://github.com/mathiasbynens/unicode-property-escapes-tests/pull/8.

* Split order tests for RegExp#flags

* small fixes for RegExp named groups

* Remove invalid syntax

* The test mustn't include the global flag

This script is intended to identify common test file formatting errors
prior to their acceptance into the project. It is designed to support
future extensions for additional validation rules.