* Add fixtures
* Add test_printer_file.py
* Remove old broken printer tests
* Include a close_on_reopen test
* Add test_printer_network.py
* Add test_printer_serial.py
* Add test_printer_usb.py
* Add test_printer_lp.py
* Add test_printer_cups.py
* Add test_printer_win32raw.py
* Test the 'printers' property
* Fix conftest import formatting
* Fix failing LP tests
* Cancel close only if literal False|None _device
* Fix win32raw failing tests (maybe)
* Include win32raw close_on_reopen test
* Include test _raw methods to win32raw
* Replace general exceptions in win32raw
* Replace wrong exception in cups
* Include more tests to cups
* Extend cups tests
* Add self-open mechanism
* self-open mechanism through the 'device' property
* Separate open() and store connection in 'device'
* Restore device status to False on close()
* Add default value to all params + type annotations
* Add generic DeviceNotFoundError exception
* Update USBNotFoundError return code
* Enhance connectors consistency
* Fix LP printer stall
* Fix LP waste of paper due to auto-flush + flush on close
* Move platform dependent printers' guard to init
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Co-authored-by: Patrick Kanzler <4189642+patkan@users.noreply.github.com>
* add inheritance diagrams to all printers and exceptions
* split off printer implementations into separate files
* add wrapper that thros RuntimeError if not importable
* add dependency check for lp
* add dependency check for pyserial
* added check for usability
* import Win32Raw
* include WIn32Raw in documentation
* enable all extras on tox
* update github workflow
