Changes:
Fixed bug in the allocateMemory method causing VM to exit abnormally

TODO
Test and implement:
· Transfer of input / output values and parameters
· Retrieving of Status Information from the Slave
Changes:
In the higher level layer, we have to introduce the concepts:
Simulation
Snapshot
Variant
VariantHistory

Variant represents the value of a variable name
the snapshots saves the variable variants after a step
The varian history stores all the values of a variable during a simulation
the simulation is not a wrapper for the proxy, it is stateless

TODO
Test and implement:
· Transfer of input / output values and parameters
· Retrieving of Status Information from the Slave