# TODO
* Support of various cryptocurrencies
    * Bitcoin
    * Bitcoin Cash
    * Monero
    * Dogecoin
    * Ethereum
    * Litecoin
* Admin backend
    * See total earning
    * See latest transcations
    * See all invoices
* Send coins to another wallet periodically
    * Optionaly, send them through a coin mixer
* Convert any fiat price to any supported crypto
* Generate invoice as PDF
* Payment site
    * Show product data
        * Title
        * Price
        * Image
        * Quantity
    * Website should either set the wanted cryptocurrency
      in advance or the user is free to choose
    * Success and cancel URL
    * Sessions
    * Payment should be still available after completion