Change Constants type for doubling_time and relative_contact_rate from int to float

Author: Eric Smyth

src/penn_chime/defaults.py

@@ -20,9 +20,9 @@ def __init__(
         self,
         *,
         current_hospitalized: int,
-        doubling_time: int,
+        doubling_time: float,
         known_infected: int,
-        relative_contact_rate: int,
+        relative_contact_rate: float,
         region: Regions,
 
         hospitalized: RateLos,