This function compresses a model by compressing species that are not
signals/inhibited/stimulated and that are not dead ends/in complex logic
(i.e. only species with either one input or one output are compressed)/in self loops.
You can also use preprocessing function instead that calls compressModel and
other preprocessing functions.
list of indexes of the species stimulated/inhibited/measured in the model, as created by indexFinder.
Value
a compressed model list, with an additional field called 'speciesCompressed'
that contains the names of the species that have been compressed
Details
Be aware that in the multiple inputs/one output case, if one of the outputs is
an '&' gate this function handles it fine as long as it is an '&' with 2 inputs
and no more.