Use handle classes to model dependencies between computation steps

Trigger computations in one object once computation results from other objects become available.

This example is a proof-of-concept to show that handle objects can be used to model dependencies between different steps of a set of computations. It shows that objects can be used to hide the complexity of arranging the order of computations that partially depend on each other. The computation can even be distributed to a cluster environment, if MATLAB DCS or QSUB_SUBMIT_CM (http://www.mathworks.com/matlabcentral/fileexchange/24512) is available.