implement updateCustomer
added some DateTimes to Customer
edit constructor to set the createdAt member to DateTime.Now
Add BookTest | Add CustomerTest | Modified AdminTest
Modified BookTest
Add ChargeAccountTest + constructor
cleaned
Add BookStateTest | restore penultimate commit
Add BookDAO | correct country name
make everything´s font black
import BookSQL
ups, wrong import .. moving back
implement borrowBook and some other things
implement getChargeAccount and AddCharge