rfc3339

This program parse rfc3339 format, and create rfc3339 format.

But this program does not support millisecond format.

・YYYY-MM-DDTHH:MM:SSZ

・YYYY-MM-DDTHH:MM:SS+HH:MM

・YYYY-MM-DDTHH:MM:SS-HH:MM

・YYYY-MM-DDTHH:MM:SS.sssZ(not support)

・YYYY-MM-DDTHH:MM:SS.sss+HH:MM(not support)

・YYYY-MM-DDTHH:MM:SS.sss-HH:MM(not support)

If you want to use, please exec 'make'.

This program does not have the other dependancy(but c++ normal dependancy).

In future, I'll use Regex. So, this program will support all formats.