lens in file from mdme project for agent update

https://github.com/chendaniely/multidisciplinary-diffusion-model-experiments/commit/cb06271394398a7fa556a9bcbfc726ba3115df09

cb06271394398a7fa556a9bcbfc726ba3115df09
delete old .in files
rename Test2.in just like mdme UpdateFromInfl.in
clear AgentState.out if exists

this makes sure new output states are not being appended to file
agents no longer write out .ex files
new type of .out files will be generated
lens looks for weights from a sub folder now

weights are also randomly generated
what we can do is create a weight and lock it for unit tests
weight creating in file from mdme
src lens files are removed, use the ones from mdme

we can port them back here if needed
these files were from when the main.py was still in this repo
address #52
moved rmd script to mdme repo

for #56
comment out agent_ex_file write call in default update

for #57
binary weight file for agent 3 used for unit testing

this was copied from a run from the mdme repo.
added comment: if the path does not exist, create it
testing floating point numbers from out files

using the numpy.testing.assert_allclose() function
the expcted cases has also changed since we have an actual weight file
to work with.
removed TODO comment, LENS is working for testing
updated lens .in file for update filename
bugfix - unit testing array of floats

was always returning true before
added the exponent to the expected values
import numpy.testing

instead of from import numpy as np
and from numpy import testing
capitalize Infl.ex, see #58
weights in weights/ subfolder