docs(hw4): add README
chore(hw4): add classpath and project files
docs(hw4): update README
chore(hw4): add hw3 package
feat(hw4): add skeleton
fix(GateScanner): make constructor public
feat(hw4): read input
feat(LogicGate): add thirdInput variable
refactor(CircuitCnf): rename readInputs to readInput
fix(CircuitCnf): initialise gates
refactor(CircuitCnf): initialise GateScanner in readInput
feat(CircuitCnf): add method stubs
refactor(CircuitCnf): initialise PrintWriter in printOutput
fix(CircuitCnf): change Gate to LogicGate
feat(CircuitCnf): complete implementation
docs(hw3): whitespace change