Hey gimre - I'm an admirer of your work.

It is a fork. We don't have the upstream connected if that is what you are referring to.

We are modifying this specifically for Cache. Being as active development is mostly finished on NEM Library we have cloned the repo directly. Aleix told me directly that there will be no more work on it, all focus is on Catapult. But we have a lot of needs and enhancements on NIS1 and this SDK before Catapult replaces NIS1.

We will be doing things like:

• Modifying APIs surrounding Accounts, Transactions, etc to be focused on Cache
• Building more API's to make things simpler such as multiple block validations in single API calls
• Building in more systems around payments - right now the SDK is very open and flexible, but we are going to make it more focused so business and developers can quickly utilize it

We are basically refocusing everything in the SDK to focus on specific features we think will serve developers and businesses that want to use Cache.

Also we are very open and clear about attribution as can be seen in the readme on the repo.