Partial match warnings

[DavisVaughan]

With options(warnPartialMatchDollar = TRUE), pROC throws some partial match warnings, which propagated up into yardstick and tune in tidymodels/tune#334

options(warnPartialMatchDollar = TRUE)
library(pROC)
data(aSAH)

# Basic example
roc(
  aSAH$outcome, 
  aSAH$s100b,
  levels=c("Good", "Poor")
)
#> Setting direction: controls < cases
#> Warning: partial match of 'se' to 'sensitivities'
#> Warning: partial match of 'sp' to 'specificities'
#> 
#> Call:
#> roc.default(response = aSAH$outcome, predictor = aSAH$s100b,     levels = c("Good", "Poor"))
#> 
#> Data: aSAH$s100b in 72 controls (aSAH$outcome Good) < 41 cases (aSAH$outcome Poor).
#> Area under the curve: 0.7314

[xrobin]

I wasn't aware of this option.
It should be easy to fix. I'll try to get that done asap.

[xrobin]

This needed changes in a few more places than I was expecting, but it should be fixed on master now.
Hopefully I haven't introduced more bugs. Fortunately the lines are all covered by tests so we should be safe.

I need to release a fix before Jan 12 upon request by CRAN (#88). I'd just like to assess where issue #82 stands and if it can go together, so this will be released soon, probably over the holiday.

[xrobin]

pROC 1.17.0 is ready and verified with the fix. Unfortunately CRAN submissions are suspended until Jan 4 2021 so the release will be delayed (#89)