work on improving tick! method. still not working, but add evaluate_all method (still need to test it)
remove bang from evaluate_cell method name
add tests to check that to_live and to_die arrays have correct cells
correct test for rule 1 to properly initialize starting cell state
add condition where cells will only move into to_die and to_live if they have opposite state
fix tests on lines 33 and 40 so that starting positions initialize properly
fix syntax error on line 64 of test
change cell test and class so that the cell state will keep track of it will live or die in the next turn.
remove to_live and to_die staging arrays from board tests and board initialize method