When viewing an envelope from the Inbox, show a chart just like Mvelopes v4. The chart should:
Allow for selecting a time range to display (a range of months)
Show the spending for each month in the selected time range
Show the minimum, average and maximum spending each month in the selected time range
This feature will help me to figure out how much to budget for the envelope (i.e. average spend) and if the envelope has too much in it (i.e. maximum spend).