Release v1.9.1 on 2022-04-18.

1. 5fa8b08 Integrate Debian packaging changes by Max · 8 years ago
2. e600eed debian: Move debian directory to ease building packages by Holger Hans Peter Freyther · 12 years ago[Renamed from openbsc/debian/compat]
3. 640d72a Add 'debian' directory containing debian packaging information by Harald Welte · 14 years ago