Updates and new datasets
- Updated HPS estimation functions to work with datasets (issue #2 from austinj).
- Added additional example datasets (Ruiz, Salazar, Thiemann2001, Thiemann2004, Bryant2018).
- Updated web-app to allow use of .xlsx files.
- Fixed bug in web-app occurring when cases were listed out of alphabetical order.
- Fixed bug in web-app occurring when auto-correlation is very weakly identified.