Prevent downloads

[Elimil]

Would it be possible to get the will-download event to Session class?
I would want to prevent certain file extensions to be downloaded.
Another thing would be that could do automation with specific filetypes.
More information of this at
https://github.com/electron/electron/blob/master/docs/api/download-item.md

[Saviorjke]

What about to get the Event: 'will-navigate'? https://github.com/electron/electron/blob/master/docs/api/web-contents.md
It would be helpful to have some kind of events of this class.

[GregorBiswanger]

We need support - I can't add new features as quickly as possible on my own. Here is a video of how you can install the missing features yourself and submit them as a pull request:
https://youtu.be/Po-saU_Z6Ws

Please also test it with you.