adding in solution for keeping track of buildings which can see the sun
updating tests around building manager
updating problems with max queue problem, though solution is currently incorrect and will have to be revisted
adding in circular list problem
adding  in tests around circular list finder and
updating code from a bug found in the tests
adding in coding problem for a character generator
updating tests around string generator
updating string generator with one more test
adding initial implementation of parenthesis finder
adding in tests around parenthesis matching function