Release 4.1

What’s new:

1) Added NFT support

2) Added new blockchain - Optimism with ETH OP currency and OP/USDT/USDC tokens

3) Added new blockchain - Arbitrum with ETH ARB currency and ARB/USDT/USDC tokens

4) Added new system letters that notify about replenishment of funds, withdrawal of funds, login from a new device

5) Added an instruction in the merchant settings to create a custom url for checkouts

6) Added multi-creation and multi-import of wallets. For example, now with one private key you can create several wallets in different networks

7) Added the ability to display the wallet QR code on balances

8) Added display of token balances on multisend