basename bug

[GreenSuslik]

Hello!
In MultipartStreamBuilder->prepareHeaders L125 you use function basename. This function is locale aware.
When i'm create request, with russian or UTF8 file name, prepareHeaders return invalid filename in headers.

Would you like to change the it to pathinfo function?

[Nyholm]

Okey. I did not know. We should not use basename then. Would you mind sending a PR?

[Nyholm]

Closed by #18

[GreenSuslik]

Can you make a release or say plane date

[Nyholm]

Today or tomorrow. I'm just going to confirm it with the team