bdamian

First, thanks for your interest! I agree about tests. I'll prepare some, also for the other pull requests.

## topic's configuration parameters In multiple projects we have some configuration parameters specific to a topic. It would be very convenient to get those parameters when a task is instantiated.

## contexts Related to _eager initialization_. Provide an immutable context to a task during construction. A context consists of multiple information and decreases possible memory footprint of a task, because...