debian/source/format uses 'native'. As Koha is not native Debian software, and to allow Debian revision numbers like -2 in 16.05.13-2, it should be changed to 'quilt'. This is only relevant to packaging and does not affect Koha itself.
Created attachment 70743 [details] [review] Bug 18696: Change debian/source/format to quilt debian/source/format uses 'native'. As Koha is not native Debian software, and to allow Debian revision numbers like -2 in 16.05.13-2, it should be changed to 'quilt'. This is only relevant to packaging and does not affect Koha itself.
Patch pushed to master for 18.05 Thanks Mirko!
Awesome work all! Pushed to Stable for 17.11.02
Pushed to 17.05.x for v17.05.09