Items now appear, but they should initially shrink and they don't
Add 15-ish tests for flexbox layout
Port reasonable flexbox test set
Fixing issues, adding unit tests
Moved from .tsx to .ts and used our ui/builder.parse
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
