• Each card should have the user's avatar, name, and occupation. For users with no image avatar, display the first letter of their first name in place of an image.
  • Each card should display the sum of all impressions, conversions, and revenue.
• Each card should display a simple chart of of conversions per day.
• Implement the ability for the user to sort the cards by name and by total impressions, conversions, or revenue
• Write unit tests for testable portions of your code

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