[FR]: VennDiagramm: Not Selector

[mkikets99]

I'm submitting a...

[ ] Regression (a behavior that used to work and stopped working in a new release)
[ ] Bug report  
[ ] Performance issue
[x] Feature request
[ ] Documentation issue or request
[ ] Other... Please describe:

Current behavior

Now it just simply selects parts between circles. but Venn Diagrams have a selection like (A\B) or (A xor B)

Expected behavior

Some kind of selectors, like ["A","B","^A|B"]

Minimal reproduction of the problem with instructions

What is the motivation / use case for changing the behavior?

Real defining of Venn Diagram

[amcdnl]

Good suggestion - I would avoid custom syntax though and just pass objects