set rng seed from timestamp

bingo.py

@@ -8,10 +8,13 @@ from textual.color import Color
 
 from asyncio import sleep
 
+from datetime import datetime
+import random
+
 class BingoField(Static):
     """A Bingo field widget."""
     
-    cursor_x, cursor_y = 2
+    cursor_x, cursor_y = 2, 2
 
     class Selected(Message):
         """Send message to the board containing clicked field info"""
@@ -83,8 +86,9 @@ class BingoApp(App):
         'Gulasch gegessen'
     ]
     
-    # todo: prng stuff
+    # get rng seed from current time
-    import random
+    seed = int(datetime.now().timestamp())
+    random.seed(seed)
     random.shuffle(fields)
 
     def compose(self) -> ComposeResult: