Error when running `get_538_elo_historical'

Hi Tom -

When running `get_538_elo_historical(team = "ari")` (or any team for this matter),  I get the following error:

```Error in `dplyr::mutate()`:
ℹ In argument: `pts_for = suppressWarnings(unlist(pts_for) %>% as.double())`.
Caused by error:
! `pts_for` must be size 1622 or 1, not 1521.```