Services inside Parallel Conditions

[FlorianDue]

It is not possible to define services inside a parallel condition, but only tasks. However it is possible to use services inside counting loops, while loops and parallel loops. It would be great to enable the use of services inside parallel conditions. otherwise the petri net gets unnecessary places and transitions and becomes more complex.

[maxhoerstr]

That is a major change in the concept of the PFDL, which requires input from @ptrdtznr and @andreasebner.
In general, this should be possible, however, it could reduce the redabilty of tasks.