`initialized` via `build()`?

[jGaboardi]

The conga line structure must have min_points to be initialized from the FastPair class. However, when an instance is created via FastPair.build() there is no assumption any min_points.

Should we perhaps throw a warning if min_points are not yet met when calling .build()?

Also, here in test_iter().

[carsonfarmer]

Yes good point, for consistency, it should probably be throwing a warning or error.

[jGaboardi]

I think a warning is best since there is sound logic for simply doing the brute-force when min_points aren't met.