MemoryWriter does not support std::put_time

[duckie]

std::basic_ostream supports the new std::put_time function.

I am not surprised since this is not the classic << overload as according to the documentation: http://en.cppreference.com/w/cpp/io/manip/put_time.

Not sure if cppformat should support it, but it would be nice.

[vitaut]

Good idea. It should be possible to do something like:

    std::time_t t = std::time(nullptr);
    std::tm tm = *std::localtime(&t);
    fmt::print("{:%c %Z}", tm);

with a custom formatting function.

[vitaut]

Time formatting has been implemented in fa5ebd2. Here's an example:

#include "fmt/time.h"

std::time_t t = std::time(nullptr);
fmt::print("The date is {:%Y-%m-%d}.", *std::localtime(&t));

This just needs to be documented.

[vitaut]

Done: http://fmtlib.net/dev/api.html#date-and-time-formatting