Add ZeroTo (somewhere)?

[MikaelSlevinsky]

One of the greatest things is the notation to fill in multivariate operators: given the mortared types of n and k, broadcasted operations Just Work (ok, probably that took a lot of effort).

Wouldn't it be nice to index from zero to infinity to match the math formulas given that polynomial degree starts at 0?

[dlfivefifty]

The only reason I didn’t do this is then the coefficient vectors would also have to index from 0, eg be wrapped in an OffsetArray, which just adds even more complexity

we don’t necessarily need ZeroTo since we can always use 0:∞