Object size

[gvegayon]

As the number of variables increases the number of unique combinations does too. This causes the size of the ergmito object to increase significantly (consider having 40 matrices (networks) of size 1e6 each). Need to figure out a way to store this information in a more efficient way.

[gvegayon]

Obs: It seems that I'm actually duplicating objects throughout the formulae. I should be smarter instead and simplify the loglike function and force it to pass the data objects (or something like that). Right now I have 2 copies of each stats object, which is causing to have huge datasets loaded in memory.