Currently, notifications show time in the format HH:MM:SS:

We want instead to check the browser locales and display the time according to the user location/preferences. Date formatting should be done either natively (i18n module, cf. [here](https://developer.mozill

For example, given a simple pipeline such as:

Pipeline p = Pipeline.create();
p.readFrom(TestSources.items("the", "quick", "brown", "fox"))
 .aggregate(aggregator)
 .writeTo(Sinks.logger());

I'd like aggregator to be something requiring a non-serialisable dependency to do its work.

I know I can do this:

Pipeline p = Pipeline.create();
p.readFrom(TestSource