The quantity col in salebill is now customized and can take values in the form of a+b. Fixes #42 and also correcrted the bug of adding new items when the sale bill is submitted
Merge pull request #46 from sioLabs/CustomizedQuantityInSalebill

The quantity col in salebill is now customized and can take values in the form of a+b. Fixes #42 and also correcrted the bug of adding new items when the sale bill is submitted