1.20.0

• Assert: Expose assert.raises() to the global scope.
• Assert: Add an optional callCount parameter to assert.async().
• Core: New QUnit.only() method.
• Core: Support Symbol types on QUnit.equiv.
• Core: Make QUnit.start fails if called with a non-numeric argument.
• Core: New nested scopes ability for modules.
• Core: Equivalency for descendants of null constructors.
• HTML Reporter: Add indicator for filtered test.
• HTML Reporter: Collapse details for successive failed tests.