Cool things in C++17

C++17 reached Draft status in March 2017.  Cool features include:

• nested namespaces (namespace X::Y {}, instead of namespace X { namespace y {}})
• initializer in if statement (i.e. instead of if (condition), then if ( init; condition)
• guaranteed copy elision by compilers in some cases

Notes - copy elision refers to a compiler optimization technique that removes unnecessary copying of objects.