How does miss_var_span deal with remainders?

[njtierney]

Need to update the miss_var_span docs, and add a message describing the number of spans and the remainder left and how that is handled. There should be a warning message that describes whatever the final span is should be provided.

I need to think about how to best capture/describe this, but something like this to start,

When the number of observations isn't a perfect multiple of the span length, the final span is whatever the last remainder is. For example:

library(naniar)
test <- miss_var_span(pedestrian,
                      var = hourly_counts,
                      span_every = 4000)

sum(test$n_miss) + sum(test$n_complete)
#> [1] 40000

^{Created on 2020-08-27 by the reprex package (v0.3.0)}

(Issue noted by Allison Horst)