Introduce the Success Criteria class

Signed-off-by: J. Renée Beach <splendidnoise@gmail.com>
Run an evaluator on the completed test collection.

Signed-off-by: J. Renée Beach <splendidnoise@gmail.com>
Allow test runners to register a successCriteriaEvaluated callback.

Signed-off-by: J. Renée Beach <splendidnoise@gmail.com>
Add a test file for the Success Criteria 1.4.3

Signed-off-by: J. Renée Beach <splendidnoise@gmail.com>
Black and white are flip-flopped

Signed-off-by: J. Renée Beach <splendidnoise@gmail.com>
colorFontSizing to colorFontContrast

Signed-off-by: J. Renée Beach <splendidnoise@gmail.com>
Basic text test, no manipulation

Signed-off-by: J. Renée Beach <splendidnoise@gmail.com>
img.src loading doesn't need a try/catch

Signed-off-by: J. Renée Beach <splendidnoise@gmail.com>
Merge branch 'refs/heads/fix-color-contrast-test' into issue-129
Fix test components in cssTextHasContrast.html

Signed-off-by: J. Renée Beach <splendidnoise@gmail.com>
Add a post-invoke hook to the color tests.

Signed-off-by: J. Renée Beach <splendidnoise@gmail.com>
Test for Test.getGroupsBySelector()

Signed-off-by: J. Renée Beach <splendidnoise@gmail.com>
Change getGroupsBySelector to getCasesBySelector

Signed-off-by: J. Renée Beach <splendidnoise@gmail.com>
cannotTell to cantTell

Signed-off-by: J. Renée Beach <splendidnoise@gmail.com>
refactor the top-level complete callback to testCollectionComplete. complete really needs to be saved for the full evaluation

Signed-off-by: J. Renée Beach <splendidnoise@gmail.com>
Ensure that a test completes even if no cases are run.

Signed-off-by: J. Renée Beach <splendidnoise@gmail.com>
Merge branch 'refs/heads/dev' into issue-129