tracing

[bklebel]

In any application built with the sequence_runner, it would be beneficial to trace the command execution, being able to display the current status, where the runner is in the sequence.
For this to work smoothly, there should be some kind of ID for every single command, as well as the nesting level.
The id of the currently executed command should be stored, possibly together with all existing nesting-parents.

• add ID & nesting level to entries