importing Annsik's battery API tests from DAP DCVS repo
import from darobin's tests for DAP vibration API
don't use absolute ref
Update Range tests for changes to the detach() method.
Tests from Navigation Timing
Removed metadata_cache
Move pagevisibility/ to page-visibility/ to match /tr shortnames.
Update format-field-retry.htm

timeout
Update format-field-retry-bogus.htm
Update message.php

empty line at the end of this file makes tests harder to understand
shadow-dom: Remove a test file for Selectors API.

This change removes test-008.html. The tests in this file are (mostly) covered
in selectors-api-001.html.

test-008.html includes tests that pass complex selectors to querySelector()
and querySelectorAll(), but it is suspected that these tests add little value;
we are not testing Selectors API itself but testing interactions with it, thus
the existing tests in selectors-api-001.html should suffice for this purpose.
Added a test for element.outerHTML to verify HTML fragment serialization algorithm
Added tests to @Ms2ger's html/semantics/interfaces.html

for the a, area, dialog, figcaption, summary and track elements.
Merge pull request #257 from zqzhang/submission/zqzhang/html-interfaces

Added tests for the a, area, dialog, figcaption, summary and track elements html/semantics/interfaces.html.
Add tests for the XMLHttpRequest `responseType` property

Closes #260.
Add CONTRIBUTING.md file which contains CLA.
Modifications to CLA and disclaimer text.
Further modifications to the CLA text.
Update README according to CLA flow changes.
Merge pull request #231 from tobie/fix-page-visibility

Move pagevisibility/ to page-visibility/ to match /tr shortnames.