This PR introduces selling of products and packages. A QR code is generated that contains the invoice id.
Main problem with this is that original (Android version) QR generation was done differently (multiplying some giant number for no apparent reason other than esthetics). I refused to do that, and I'm pretty sure that means this version is not compatible with old Android version. Yikes.
Can't be sure whether there are any deal breaking bugs, but so far so good! Everything seems to work just fine.
This PR introduces selling of products and packages. A QR code is generated that contains the invoice id. Main problem with this is that original (Android version) QR generation was done differently (multiplying some giant number for no apparent reason other than esthetics). I refused to do that, and I'm pretty sure that means this version is not compatible with old Android version. Yikes.
Can't be sure whether there are any deal breaking bugs, but so far so good! Everything seems to work just fine.
Closes #10.