Bug#959095: imv: Update to 4.1.0

[Cédric Hannotier]

Package: imv
Version: 4.0.1-1
Severity: wishlist

Dear Maintainer,

Could you package v4.1.0 and push it to unstable/testing? It was
released on 2019-12-21.
It fixes reading images from stdin.

Regards,
Cédric