Add light-weight Vector class

[Argoday]

Add light-weight Vector::Vector class to reduce dependence on std::vector which adds significantly to DLL size while most of std::vector's functionality is left unused

[Argoday]

I eventually decided against making this change. There is no point in duplicating fundamental stl containers just yet. Later if code size becomes a priority then this will need to be revisited - however when compiling statically this isn't much of a real issue.