added deepCopy from https://gist.github.com/Deco/3985043

Copyright (C) 2012 Declan White

Signed-off-by: etcher3rd <etcher3rd@gmail.com>
added Stringify from https://gist.github.com/Deco/3985043

Copyright (C) 2012 Declan White

Signed-off-by: etcher3rd <etcher3rd@gmail.com>