query: 2.0.0 - Values are serialized as JSON

query: 2.0.0 - Values are serialized as JSON
--
works, still startling, but explainable

* Splitting the command ``table()``, that reads the input-topic and
  materializes it as ``KTable()``, into the two statements ``stream()``,
  that reads the input-topic into a ``KStream``, and ``toTable()``, that
  turns the `KStream` into a ``KTable``, the ``JsonSerde``, that is
  specified via ``Consumed.with(..)``, is only used for the serialization
  and deserialization concerning the ``KTable`` -- not the deserialization
  of the values, that are read from the input-topic.
* Hence, the type-mappings does not have to be specified for the
  ``JsonSerde``, resulting in better understandable code.
* __Note__, that the resulting topology does not differe, because the
  DSL is able to combine the effects of the two statements.