Don't encode binary pointer key as string in name details about aeternity

[hanssv]

Well, bytearray is base64 (+ check bytes) - but sure ba_... (or cb_...) could be used in this case, I agree!

[davidyuk]

Consider encoding keys in the pointers object as base64 to be consistent with the mdw implementation aeternity/ae_mdw#1665

[hanssv]

As discussed elsewhere - changing this is trivial, and makes sense - question is how much of a breaking change is it?

[hanssv]

A less breaking solution would perhaps be to add a field with the the encoded key?

[dincho]

I don't think it should be base64 but more like bytearray encoded?

[dincho]

I don't know what was the initial idea behind cb_, but it feels like it's abused nowadays or it's name is wrong :)