Change documentation link in README

Add unit tests for QR Code creation and status retrieval in Pix API

Update QR Code status retrieval to accept ID and enhance documentation

Bump version to 0.2.0 in setup.py

Enhance QR Code creation to support split rules and update documentation

Update README.md to correct QR code attribute name in example

Refactor PushinPay class to use instance variable for sandbox URL selection

Fix import statement for PushinPay in Pix class initialization

Add MANIFEST.in and update setup.py with repository URL and classifiers

Add .gitignore file to exclude common Python artifacts and environment files

Add string representation method to QRCodeResponse class

Initial commit for PushinPay library version 0.1.0

Initial commit