…callback provided to QUnit.log(Function). Fixes #296
…t. Fixes #284 - deepEqual for RegExp should compare
…s tooltip). Fixes #274 - Improve urlFilter API and UI
Add an additional optional argument to pushFailure() which can be used to write a message corresponding to what occurred. In the raises assertion if actual is undefined it means no exception occurred; since we were expecting one in this case use the modified pushFailure() to notify the user.