get_historical_rankings: Get historical PSA rankings from SquashInfo
Description
Given a year, abbreviated month, competition category, and number of top players, get_historical_rankings() returns the corresponding historical PSA rankings table.
# NOT RUN {## Who were the top 5 players in both men's and women's singles in January 2019?# }# NOT RUN {top5 <- get_historical_rankings(2019, "Jan", "both", 5)
# }# NOT RUN {# }