seems uint64_t not supported?

[douyw]

Hi,
Thank you for this very convenient library!
I just downloaded the latest code. When uint64_t inserting, the following link error occurs:

error: undefined reference to `std::unique_ptr<sqlite::database_binder, std::default_delete<sqlite::database_binder> >& sqlite::operator<< <unsigned long long>(std::unique_ptr<sqlite::database_binder, std::default_delete<sqlite::database_binder> >&, unsigned long long const&)'

Is it necessary to write a special template for uint64_t?

[douyw]

Oh! I changed uint64_t into int64_t, it get compiled.

[Killili]

Youre right there is a template missing.

[Killili]

I honestly thought there was no uint64 support because sqlite uses int64 for everything. But there is. So Pull #39 will fix this.

[Killili]

#39 Fixed it for VS2015 but travis (g++ 5) complains about it. And its a good thing so i had some time to think about it.

SQLite does not provide API functions to set and get unsigned values from a database. We can fake that by casting signed types to unsigned types (like i did in #39).
But if anybody else would read data from that database he would have no clue to guess the signednes of integers. So i dont think we should add this!