Added code for the strike.  This includes use of the global variable 'captured', which ends the simulation when true.
I've moved the behavioral decision making code into 'give_behavior.m', which now uses the 's' structure in 'simple_model' to keep track of the behavioral state of predator and prey.  This has presently broken the animation code (to be fixed shortly), but simulations run fine.
Handling of parameter values made more modular: 'default_params.m' defines the default values for simulations (now include dimensions for each value), 'convert_params.m' handles normalizing my scaling constants, 'run_sim.m' and 'simple_model.m' were consequently made more simple.
Added post-processing that allows to a reconstruction of behavioral states that occurred during a simulation.  This was handled primarily by reconstruct.m, but other functions affected and visualization code added to vis_results.m.  Animation code still broken.

Also, fixed some bugs in parameter values (and dimensions).

The following were deleted, with code moving to other functions: pred_strike.m,  vis_instant.m
update of files for simulating Weihs situation., 'give_behavior' has a new case (Weihs) to give prey and red behavior. 'prey_escape' now needs a version input (full or Weihs)

added 'run_batch_sim', which sets up the parameters for Weihs and runs simulation
merge my previous commit (Weihs batch simulation) with post-processing commit