Encode to UTF-8 in pprint

The encoding (or the lack of) was causing issues with the pretty print
function of scholarly in Windows machines. This is one of the errors
reported in #413.

Author: arunkannawadi

scholarly/_scholarly.py

@@ -434,7 +434,7 @@ def pprint(self, object: Author or Publication)->None:
                     del publication['container_type']
 
         del to_print['container_type']
-        print(pprint.pformat(to_print))
+        print(pprint.pformat(to_print).encode("utf-8"))
 
     def search_org(self, name: str, fromauthor: bool = False) -> list:
         """