Yii2 library for payment stuff

• Currency
• Amount
• Amount Currency Convertion
• Credit Card
• Virtual Pos Base
• OpenExhangeRates.org exhange rates update and list actions

Currencies are stored with ISO 4217 Alphanumeric and Numeric Codes, Symbols, Decimal Fixation on the table. Migration is required to use.

• Amounts consist of a total float number and Curreny Object.
• Can be converted to any other