POS Brazil Version 4.20.1

Fixes:

• Customer discount issue introduced by 4.20.0 release is now fixed and working correctly
• Scanning customer now returns the same information as customer search from the main Customer Search field
• Fixed POS Brazil crash when accessing Printing configuration shortly after POS loads/refreshes, introduced by 4.20.0 release
• Coupons issued by the POS now reference the invoice and customer