Bug and need to start week on Monday

Overall good app.

Just discovered a bug. I have a habit of 30+ days in a row. I changed name, and then its schedule from in the afternoon to anytime in the day. Now its overdue. Going back as far as I could, I saw it become undone for all the days. However, in the more stats view, I see all green circles meaning they are done. But there is no line connecting them.

Please add the option to start week on Monday.

When I set a goal to workout three days a week, it makes sense for me to still be able to meet the goal if I can do the last one on a Sunday.

Xym2015 about Productive - Habit Tracker, v1.3.3