Income Plotting

[jonLicari]

Need to plot:

• • [x] Total income as pie chart comprised of Primary, Secondary
• • [x] Subcategories of Secondary
• • [x] Total expenses as pie chart comprised of Categories
• • [ ] ~Subcategories of respective Categories~ not valuable
• • [x] Net Savings
    • sum of income minus sum of expenses
• • [ ] Combine Primary and Secondary categories into a single Category
    • update spreadsheet to add "Salary" as a Sub-category
    • This will help plot income as all income information can be accessed more effectively
    • this should be undertaken in a separate PR since it would involve refactoring both the data and script beyond plotting