Single-game Statcast queries and extending standings data
In honor of opening day being last week, some new additions:
- Added statcast_single_game function for retrieving Statcast data by game id
- Extended standings function to give league-level standings for seasons dating back to 1871 (originally only gave division-level standings since the introduction of divisions in 1969)
- Bug fixes and stability improvements
- Documentation improvements
Thanks to ntanners, tonycpsu, and kunalcsc630 for contributing to this release!