Sanitarium

Details
The Sanitarium has three places that can be upgraded:
 * Treatment Library: reduces the cost of Sanitarium Quirk treatments, allowing you to lock in positive Quirks and remove negative ones for less gold.
 * Medical Devices: reduces the cost of treating Disease and increases the chance of wiping out more than one disease at a time
 * Patient Cells: this allows for more heroes to be treated at once. Initially the Sanitarium only has one medical slot and one treatment slot