Variadic version of BasicFormatter's ctor.
Pre-allocate space for arguments.
Replace BasicFormatter.Add with args_.push_back.
Disallow formatting of wchar_t when using a char formatter.
Fix a typo.
Conditionally compile C++11 parts.
Detect the availability of initialize lists.
Fix compilation on GCC when -std=c++11 is not specified.
Test compilation with default flags.