Issue fitnr#58: monthcalendar makes 6-day week.

We don't really have to compute the ending day or the rpad anyway.

src/convertdate/utils.py

@@ -74,14 +74,12 @@ def n_weeks(weekday, jd, nthweek):
 
 
 def monthcalendarhelper(start_weekday, month_length):
-    end_weekday = start_weekday + (month_length - 1) % 7
 
     lpad = (start_weekday + 1) % 7
-    rpad = (5 - end_weekday % 7) % 6
 
-    days = [None] * lpad + list(range(1, 1 + month_length)) + rpad * [None]
+    days = [None] * lpad + list(range(1, 1 + month_length)) + 7 * [None]
 
-    return [days[i : i + 7] for i in range(0, len(days), 7)]
+    return [days[i : i + 7] for i in range(0, lpad + month_length, 7)]
 
 
 def nth_day_of_month(n, weekday, month, year):