Continue resolving issues regarding MSVC.

Fix one remaining local variable name that hid member field in CSVIterator::setDelimiter() (finishes R20:77afb5d8c6d2);
make sure all member fields are initialized by the default constructor of CSVIterator;
avoid implicit type conversion in examples/CSVFiles/main.cpp by appending floating-point literals with 'f';
fix double-brace style suggestion with initialization list for std::array variables in examples/CSVFiles/main.cpp.