Number of storms in `storms`

[speegled]

The documentation of storms indicates that there are 198 storms in storms. I believe that 198 is the number of different names, but that there are 425 different storms. There are 426 unique name/year combinations, and I think that Zeta (2005-2006) is the only storm in the data set that was active over two calendar years.

[romainfrancois]

It might also be time to update the data, it looks like there is more data now here: https://www.nhc.noaa.gov/data/#hurdat