fixed stack-machine.js to use module.exports
add a bunch of other tests for stack-machine
Queue problem solved in C++11
Cleaner C++11 Stack solution by using perfect forwarding
Once problem solved in C++11
Once problem solved in Python
Added C++11 unit test for Stack-Machine solution, and rudimentary Makefile to run all tests
Merge pull request #68 from tclamb/c++11-once

Once problem solved in C++11
Merge pull request #66 from tclamb/js-stack-machine-tests

Additional stack-machine.js tests
Merge pull request #67 from tclamb/c++11-stack-perfect-forwarding

Cleaner C++11 Stack solution by using perfect forwarding
Merge pull request #65 from tclamb/c++11-stack-machine-tests

Added C++11 unit test for Stack-Machine solution
Merge pull request #64 from tclamb/c++11-queue

Queue problem solved in C++11
Merge pull request #69 from tclamb/py-once

Once problem solved in Python