Merge pull request #1156 from ljharb/finally

.gitignore

.npmrc

features.txt

...s/Promise/prototype/finally/invokes-then-with-function.js

...omise/prototype/finally/invokes-then-with-non-function.js

test/built-ins/Promise/prototype/finally/is-a-function.js

test/built-ins/Promise/prototype/finally/is-a-method.js

test/built-ins/Promise/prototype/finally/length.js

test/built-ins/Promise/prototype/finally/name.js

test/built-ins/Promise/prototype/finally/prop-desc.js

...omise/prototype/finally/rejected-observable-then-calls.js

.../Promise/prototype/finally/rejection-reason-no-fulfill.js

...prototype/finally/rejection-reason-override-with-throw.js

...Promise/prototype/finally/resolution-value-no-override.js

...omise/prototype/finally/resolved-observable-then-calls.js

...lt-ins/Promise/prototype/finally/this-value-non-object.js

...Promise/prototype/finally/this-value-then-not-callable.js

...ins/Promise/prototype/finally/this-value-then-poisoned.js

...t-ins/Promise/prototype/finally/this-value-then-throws.js