* Updated Karma and Jasmine versions
* Added DOMObserver class. Supports promise-based testing of DOM changes
Update asynchronous test specs to use promises or done() instead of waitsFor/runs
* Modified ActionCapability to duplicate context object properties as own properties for better object equality comparisons
* Global find + replace to fix syntax issues
* Fixed various issues caused by non-deterministic runtime order of tests in Jasmine 3. Fixed issues caused by changes to determination of object equality
* Addressed review comments
* Resolved merge conflicts with master
* Fixed style errors
* Use spy.calls.count() instead of manually tracking
The composition policy now takes a child instance instead
of the child type, as in all cases we have access to the child
object.
This allows new-style objects to be contained by old-style objects.
Updated all composition policies to use standardized argument names
instead of `context` and `candidate`; this makes it easier to
understand.
Updated AddActionProvider to hardcode the object types supported.
