Google Analytics V4

[maartenba]

Google Universal Analytics is retiring, and the new V4 version will be the way forward: https://support.google.com/analytics/answer/10089681?hl=en

This library was built for one specific project, and open-sourced so others could make use of it as well.

Right now, I don't have any plans or time to update the library to this new protocol - when Google Universal Analytics ceases to exist, this library will be archived.

If anyone wants to look into this, I'm more than happy to discuss ideas and accept pull requests.