Split type.class from CssTypeSelector to CssCompositeSelector, probably support type#id.class selectors
Apply review comments, refactor css-selectors internally
Applied refactoring, all tests pass, button does not notify changes
Add tests for the css selectors parser.
Added tests for css-selectors
Added basic implementation of mayMatch and changeMap for css match state
Implemented TKUnit.assertDeepEqual to check key and key/values in Map and Set
Watch for property and pseudoClass changes
Add one child group test
Add typings for animations
Added mechanism to enable/disable listeners for pseudo classes
Count listeners instead of checking handlers, reverse subscription and unsubscription
