added borower name
added book class initialize instance vars
added add_book method
added list_books method, also added title and author methods in book
added name return method
added available and borrowed books arrays
added a checkout method in library. added borrow method in book, added reading method in book, took out available and borrowed array in library
added checks in initialize
made list message clearer by replacing status with checked out by
added a message saying a book that is already checked out cannot be checked out
took out initialize checks
added status to book
added status to list and separated status and checked out by
edited code to be like intsurtor mikes: added borrower= and status= methods, added borrowed books if statment in check out
added the max check outs restraint
added borrowed books list
added available and borrowed book methods
added the relese borrowed book method
minor change, last change before switch to front end
finished check in method