Zigzag pivot detection index column

[80sVectorz]

The zigzag indicator implementation is great, however it's lacking in one key aspect.
There's no way to know when a pivot was actually detected. Currently, the zigzag can't be used for back-testing purposes, as the pivot indices are placed before their actual detection would have happened.
A column that shows at what bar index the pivot was confirmed would be fantastic. The column could either have the absolute index or an offset.

[80sVectorz]

I've decided to take a crack at the problem. Currently, I'm just adding commentary and making small adjustments for readability.
Should I make a PR when I've made these changes so it's more readable, in case other's want to try to implement it as well?
EDIT: I'll just make a PR
EDIT: PR has been made

[twopirllc]

Hello @80sVectorz

Yes PRs are more descriptive. Thanks for submitting one! 😎