Merge pull request #65 from Cratis:saved-offset-fix

Saved offset needs to be the next event it will start from (1 indexed)

Source/Extensions/Dolittle/Projections/ProjectionEventProvider.cs

@@ -166,8 +166,8 @@ async Task<EventLogSequenceNumber> OnNext(IProjection projection, ReplaySubject<
                             content));
                 }
 
-                await _projectionPositions.Save(projection, @event.Id);
-                lastSavedPosition = @event.Id;
+                await _projectionPositions.Save(projection, @event.Id + 1);
+                lastSavedPosition = @event.Id + 1;
             }
 
             return lastSavedPosition;