std::istream & operator>>(std::istream & is, Author & a)
{
string s;
getline(is, s);
a.name_ = trim(token(s, '\"', 1));
a.email_ = trim(token(s, '\"', 2));
std::istream & operator>>(std::istream & is, Author & a)
{
string s;
getline(is, s);
a.name_ = trim(token(s, '\"', 1));
a.email_ = trim(token(s, '\"', 2));