Release notes

Implemented functionality:

• The architecture of smart-contracts has been redesigned. Added ability to keep track of tariffs and subscriptions for different services

• Multiple tariffs added for subscription to services

• Set up tariffs that entitle user to use service a certain number of times

• Usage of different ERC-20 tokens to purchase subscriptions to services. The tokens are added to the collateral created for the purchaser (buyer) wNFT after the subscription is purchased

• Option to purchase a subscription for a third party has been added