fix: do not require transactions to have a name and valueDate

in MoneyMoney it is possible to create offline transactions without these
and the fields are not required for BudgetBudget

fix #25

src/moneymoney/Types.ts

@@ -20,8 +20,6 @@ const transactionShape = t.intersection(
         accountNumber: t.string,
         booked: t.boolean,
         bookingDate: date,
-        valueDate: date,
-        name: t.string,
       },
       'required',
     ),
@@ -30,6 +28,8 @@ const transactionShape = t.intersection(
         purpose: t.string,
         category: t.string,
         categoryId: t.number,
+        name: t.string,
+        valueDate: date,
       },
       'optional',
     ),