v2.1

Fix bugs and add documentation

• track --> view-budget
• Add delete-budget

v2.0

• help: Print this guide.
• add-category CATEGORY_NAME: Add a new category
• add-income [DESCRIPTION] a/ AMOUNT [d/ DATE]: Add an income
• add-expense [DESCRIPTION] a/ AMOUNT [d/ DATE] [c/ CATEGORY]: Add an expense
• add-budget a/ AMOUNT m/ MONTH : Set a new month budget
• delete-category CATEGORY_NAME: Delete an existing category
• delete-transaction i/ INDEX: Delete a transaction
• view-category: View your category list
• view-expense [c/ CATEGORY] [f/ START_DATE] [t/ END_DATE]: View your expense history
• view-income [f/ START_DATE] [t/ END_DATE]: View your income history
• view-total: View your total income - total expenses.
• history [f/ START_DATE] [t/ END_DATE]: View your transaction history
• track m/ MONTH: Track your progress towards your budget for a certain month
• search k/ [keyword_1] [keyword_2] ... [keyword_n]: Search transaction by keywords
• categorize i/ INDEX c/ CATEGORY: Categorize an expense at the given index
• bye: End the chat.

v1.0

Command list:

• help: Print this guide.
• add-category CATEGORY_NAME: Add a new category
• add-income [DESCRIPTION] [a/ AMOUNT] [d/ DATE]
• add-expense [DESCRIPTION] [a/ AMOUNT] [d/ DATE] [c/ hCATEGORY]
• view-category: View your category list
• delete-category CATEGORY_NAME: Delete a new category
• delete-transaction i/ INDEX: Delete a transaction
• view-expense [c/ CATEGORY] [f/ START_DATE] [t/ END_DATE]: View your expense history
• view-income [f/ START_DATE] [t/ END_DATE]: View your income history
• view-total: View your total income - total expenses.
• history [f/ START_DATE] [t/ END_DATE]: View your transaction history
• bye: End the chat.

Basic error handling