Validate also lower the case of domains

.gitignore

@@ -1,3 +1,4 @@
 *.log
 *.p
 .env
+__pycache__

validate_list.py

@@ -29,7 +29,7 @@ if __name__ == '__main__':
     args = parser.parse_args()
 
     for line in args.input:
-        line = line.strip()
+        line = line[:-1].lower()
         if (args.domain and database.Database.validate_domain(line)) or \
                 (args.ip4 and database.Database.validate_ip4address(line)):
             print(line, file=args.output)