Subclassing built-in objects

Improve Promise coverage: NewPromiseCapability

Improve Promise coverage: Promise Reject Function

Improve Promise coverage: Promise.prototype.then

Destructuring Binding - syntax and simple initialization

Add tests for instanceof operator when prototype property is primitive or getter

Object.{values,entries} tests

Add tests that assert sequential job execution

Update test metadata to accurately describe the more complete set of
assertions.

Because these tests concern the behavior of the PromiseReactionJob
abstract operation itself, they should avoid assumptions about the
correct implementation of that operation. Specifically: they should not
rely on the behavior of abupt completions returned from "reaction
handler" functions.

Re-implement tests to express control flow expectations using the
`$DONE` function only.

By organizing files according to the structure of the specification,
test coverage can be more methodically evaluated.

Use names that describe the behavior (not the location in the
specification) as per the current convention.

These tests concern the behavior of PerformPromiseThen for settled
Promises. That abstract operation behaves differently for pending
promises, so the file naming scheme should reflect this distinction in
order to support the future implementation of additional tests.