TC Invoicing

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v.3.7.1
- Fix Android 10 crash problem.
v.3.7
- Customer list: add New Customer function.
- Customer list: Basic version adds category selection.
- Print order: Add the function of moving up and down the product.
- Fix floating-point number display problem.
v.3.5
- Product Information Page: Added the function of querying the last 10 purchase unit prices.
- Added viewing and copying functions for barcode information.