Feature: Callback when the upload is finished.

[ptfly]

Is it possible to have a callback when the upload is finished? It will be very helpful to console.log some information about it. Also, the progress doesn't work (even on the RC release) when used with the latest version of webpack (in cli mode).

[MikaAK]

Totally possible to add a callback. Webpack internal Api has changed quite a bit since this was first made. Progress will probably have to be revisited and update how the numbers are sent to progress bar