generated TimeScalar class
moved time related methods from simulation to time scalar
renamed to time manager
time manager now manages time
Merge branch 'create-time-scaler' into development
added frame rate range to time manager
changed time_scale to frequency
removed framerate range. too complicated for now
simulation can scale real time to match given simulation and frequency times
yay! we can now scale simulation time and frequency.  NOTE: to preserve accuracy, simulation time and frequency must be integers
removed depreciated set_duration method
removed depreciated test
Merge branch 'improve-time-manager' into development