v4.0.0

• Feature - Added Amex total amount and a filter option. (VT-124)
• Feature - Added an option in account settings to choose the timeout duration. (VT-115)
• Update - Merged transaction, invoice, and Zettle transaction on the transaction page in my account. (VT-120)
• Update - Automatically update the merchant's business name in account settings. (VT-113)
• Update - Refund email notifications are successfully sent based on system settings. (VT-112)
• Update - Declined order error logs are now displayed on the same screen. (VT-103)
• Update - Enhanced log updates during payment processing. (VT-96)
• Fix - Corrected itemized details to allow 2 decimal places without failing. (VT-125)
• Fix - Invoice prefix notice/validation added(VT-128)