Added idlharness tests for Notifications API.
Use /resources/WebIDLParser.js
Add tests for hitregions (addHitRegion throws NotSupportedError)
tweak position of text
tests for definition construction algorithm
improving tests according to Dominic's notes
Updated canvas createPattern test that used a broken image
SVG_NAMESPACE constant added
Match the css-syntax spec for +/**/1
tests for unresolved element interface
Updated test for createPattern with null parameter
Merge pull request #947 from cabanier/master

Updated canvas createPattern test that used a broken image
Added test for createPattern with 'null' string
Fixed incorrect change in test2d.yaml
Merge pull request #953 from cabanier/master

Added test for createPattern with 'null' string
Merge pull request #933 from sgrekhov/submission/unipro-custom-elements-10

tests for definition construction algorithm
Increase the timeout for some messaging tests
Merge pull request #955 from w3c/jgraham/messaging_timeout

Increase the timeout for some messaging tests
Wording and indentation changes
Merge pull request #952 from sgrekhov/submission/unipro-custom-elements-11

tests for unresolved element interface