reg ex function to take str(list) and remove brackets
Merge branch 'feature-remove-brackets-from-str-list'
self.num_update to increment everytime lens agent is updated
Merge branch 'feature-agent-update-counter'
bugfix - was creating num_train_ex * num_mutations situations

most likely due to a previously if/else block to account for 0 mutations
and the indentation for the code for list appending was put inside an
inner for loop
comment out perevious (random) weight file .wt and dir

this was when the agents all had a random set of weights that were not
trained
code to read in new .wt in the weights/ subdirectory
Merge branch 'feature-fix-lens-output-dir'