first changes to new branch

now loads pitching data back to 2005, now adds tommy john injury back to
2009. all pitchers now have fangraphs playerids as well
new code! better.
good idea here

how to dynamically create the dataset.
even better now
each one now joins, but we need to add rows
fixing

seeing to add some stuff
injured data frame now joins

all the injured players are correctly loaded into an injured data frame.
now working on getting some uninjured players to compare.
testing for fix
Merge pull request #1 from julbright/new-experi

New experi