UserEntity might be dangerous

[mateusz]

I think UserEntity should not be a proxy global state because it could be dangerous or lead to confusion. As an example of how the problem can manifest see the comment here 2be7b46 .

It looks like the interface is intended to represent an actual object, so it should be tied explicitly and permanently to one concrete Member.

This is a bit arbitrary though - so asking for your feedback - is my concern legitimate?

[IanSimpson]

Honestly, I have no idea. A long time since I was actively working on this code. My first instinct is that I know the library is absolutely incomplete, and lightly tested, so it's quite likely there are a lot of sub-ideal things in there...