Webpack loader blocks all requests silently if webpack-stats hangs at "compile"

[wkleinheerenbrink]

Currently the 'runserver' command hangs in an infinite loop when webpack-stats has 'status = "compile"'. This is caused by an infinite while loop that is waiting for a different status than 'compile'.

https://github.com/django-webpack/django-webpack-loader/blob/master/webpack_loader/loader.py#L95-L103

The webpack loader has 0 as default for the timeout; ie. 'never timeout'. This results in Django Runserver never emitting any pages (eg. /admin/), without any warning.

I see two possible fixes:

1. Add a default timeout other than 0
2. If changing default is not preferred, perhaps add a warning to console mentioning the script is hanging at webpack loader

[fjsj]

a warning to console mentioning the script is hanging at webpack loader

This LGTM if a certain time has passed (> 5 seconds, perhaps)?
Please feel free to open a PR with this behavior.