Now catching any other exceptions in the `dispatch()` method
Removing the now unnecessary exception catching in
the `handleRouteCallback()` method. It should now bubble up to the
`dispatch()` method
Passing our previous exception to our default error
handler's `UnhandledException`.
Updating our test for the more proper behavior
Expanding our tests for `abort()` coverage
Merge pull request #218 from Rican7/feature/exception-catching-simplification

Feature - Exception catching simplification