Allow dump_deck.py to use non-cardcast API endpoints

dump_deck.py

@@ -3,8 +3,17 @@ import sys
 import cardcast_api
 
 def main():
-	code = sys.argv[1]
-	info = cardcast_api.info(code)
+	if len(sys.argv) == 3:
+		url = sys.argv[1]
+		code = sys.argv[2]
+	elif len(sys.argv) == 2:
+		code = sys.argv[1]
+		url = None
+	else:
+		print(f'Usage {sys.argv[0]} [url] code', file = sys.stderr)
+		sys.exit(1)
+
+	info = cardcast_api.info(code, base_url = url)
 	print('%s: %s by %s (%s black, %s white)' % (
 		info['code'],
 		info['name'],
@@ -15,7 +24,7 @@ def main():
 
 	print()
 
-	calls, responses = cardcast_api.cards(code)
+	calls, responses = cardcast_api.cards(code, base_url = url)
 
 	for i in calls:
 		print('_'.join(i))