Fix for Negative Repeat Count in Scheduler (#101) (#146)

* Comment out decrement of s.repeats in scheduler to fix negative repeat count issue

* Fix repeat count handling in scheduler

- Reset `repeats` to -1 for values less than -1
- Decrement `repeats` by 1 if it's greater than 0

django_q/scheduler.py

@@ -82,7 +82,15 @@ def scheduler(broker: Broker = None):
                             break
 
                     s.next_run = next_run
-                    s.repeats += -1
+
+                    # Little Fix for already broken numbers
+                    if s.repeats < -1:
+                        s.repeats = -1
+                    
+                    # Check if the value is not zero
+                    if s.repeats > 0:
+                        s.repeats -= 1
+
                 # send it to the cluster; any cluster name is allowed in multi-queue scenarios
                 # because `broker_name` is confusing, using `cluster` name is recommended and takes precedence
                 q_options["cluster"] = s.cluster or q_options.get(