Release 3.9

What's new:

1) Added new blockchain - Polygon with MATIC currency

2)Added ability to login/register via Google account

3)Added ability to login/register via Metamask wallet

4)Added the ability to connect the Metamask wallet to account

5)Added the ability to separate Miner Fee and Merchant Fee for replenishment and withdrawal

6)Added footer inside user account

7)Added new currency icons

8)Added transaction hashes for the payment widget on all types of checkouts